Black Friday is Here! Start Your Numerade Subscription for 50% Off!Join Today

University of Toronto

Problem 1
Problem 2
Problem 3
Problem 3
Problem 4
Problem 5
Problem 6
Problem 7
Problem 8
Problem 9
Problem 10
Problem 11
Problem 12
Problem 13
Problem 14
Problem 15
Problem 16
Problem 17
Problem 18
Problem 19
Problem 20
Problem 21
Problem 22
Problem 23
Problem 24
Problem 25
Problem 26
Problem 27
Problem 28
Problem 29
Problem 30
Problem 31
Problem 32
Problem 33
Problem 34
Problem 35
Problem 36
Problem 37
Problem 38
Problem 39
Problem 40
Problem 41
Problem 42
Problem 43
Problem 44
Problem 45
Problem 46
Problem 47
Problem 48
Problem 49
Problem 50
Problem 51
Problem 52
Problem 53
Problem 54
Problem 55
Problem 56
Problem 57
Problem 58
Problem 59
Problem 60
Problem 61
Problem 62
Problem 63
Problem 64
Problem 65
Problem 66
Problem 67
Problem 68
Problem 69
Problem 70
Problem 71
Problem 72
Problem 73
Problem 74
Problem 75
Problem 76
Problem 77
Problem 78
Problem 79
Problem 80
Problem 81
Problem 82
Problem 83
Problem 84
Problem 85
Problem 86
Problem 87
Problem 88
Problem 89
Problem 90
Problem 91
Problem 92
Problem 93
Problem 94
Problem 95
Problem 96
Problem 97
Problem 98
Problem 99
Problem 100
Problem 101
Problem 102
Problem 103
Problem 104
Problem 105
Problem 106
Problem 107
Problem 108
Problem 109
Problem 110
Problem 111
Problem 112
Problem 113
Problem 114
Problem 115
Problem 116
Problem 117
Problem 118
Problem 119
Problem 120
Problem 121
Problem 122
Problem 123
Problem 124
Problem 125
Problem 126
Problem 127
Problem 128
Problem 129
Problem 130
Problem 131
Problem 132
Problem 133
Problem 134
Problem 135
Problem 136
Problem 137
Problem 138
Problem 139
Problem 140

Problem 59

Write balanced equations for each of the following by inserting the correct coefficients in the blanks:

(a) $_{-}\mathrm{As}_{4} \mathrm{S}_{6}(s)+{_{-}\mathrm{O}_{2}(g)} \longrightarrow_{-}\mathrm{As}_{4} \mathrm{O}_{6}(s)+_{-}\mathrm{SO}_{2}(g)$

(b) $_{-}\mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2}(s)+_{-}\mathrm{SiO}_{2}(s)+_{-}\mathrm{C}(s) \longrightarrow _{-}\mathrm{P}_{4}(g)+_{-}\mathrm{CaSiO}_{3}(l)+_{-}\mathrm{CO}(g)$

(c) $_{-}\mathrm{Fe}(s)+_{-}\mathrm{H}_{2} \mathrm{O}(g) \longrightarrow-_{-}\mathrm{Fe}_{3} \mathrm{O}_{4}(s)+_{-}\mathrm{H}_{2}(g)$

(d) $_{-}\mathrm S_{2} \mathrm{Cl}_{2}(l)+_{-}\mathrm{NH}_{3}(g) \longrightarrow_{-} \mathrm{S}_{4} \mathrm{N}_{4}(s)+_{-}\mathrm{S}_{8}(s)+_{-}\mathrm{NH}_{4} \mathrm{Cl}(s)$

Answer

a)

$\mathrm{As}_{4} \mathrm{S}_{6}(\mathrm{s})+9 \mathrm{O}_{2}(\mathrm{g}) \longrightarrow \mathrm{As}_{4} \mathrm{O}_{6}(\mathrm{s})+6 \mathrm{SO}_{2}(\mathrm{g})$

b)

$\mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2}(\mathrm{s})+3 \mathrm{SiO}_{2}(\mathrm{s})+5 \mathrm{C}(\mathrm{s}) \longrightarrow 2 \mathrm{P}_{4}(\mathrm{g})+3 \mathrm{Ca} \mathrm{SiO}_{3}(\mathrm{l})+5 \mathrm{CO}(\mathrm{g})$

c)

$3 \mathrm{Fe}(\mathrm{s})+4 \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \longrightarrow \mathrm{Fe}_{3} \mathrm{O}_{4}(\mathrm{s})+4 \mathrm{H}_{2}(\mathrm{g})$

d)

$6 \mathrm{S}_{2} \mathrm{Cl}_{2}(\mathrm{l})+16 \mathrm{NH}_{3}(\mathrm{g}) \longrightarrow \mathrm{S}_{4} \mathrm{N}_{4}(\mathrm{s})+\mathrm{S}_{8}(\mathrm{s})+12 \mathrm{NH}_{4} \mathrm{Cl}(\mathrm{s})$

You must be logged in to bookmark a video.

...and 1,000,000 more!

OR

Join 5 million HS and College students

## Discussion

## Video Transcript

we have the violence of the chemical reaction on this page. Establish the 1st 1 So we're a s for as 6% actually become and say s for six. Possesses true. Okay, so far so far. We were, um, pounds. And he asked on the level of foreigner right Where? Four. So we don't have to actually part of snatch and then we can go from to buy and sell for So the number six on the right we have assaults you less so for us it was who? So we have the post six. Even the answer to two buns there. Sulfur. Okay, so we have to herself over s Barnes sulfur bonds. The next one will be all surgeons. So on the left, we only up to you on the right. We're six for many A s for six and then 12 from assault. Your six times two is 12. So total we have 18. You ever have 18? Awesome. Okay, so 18,000 if it bites you weeping. Nice. So what's up with life in the old shoe? So we're for 18. Also jitters all bonds. The next wish you were see Threepio four to process I owe to pass carbon and there were forced to use three for C A s i o fee and also seal. Okay, so I will chose. Ah. First of our shows are adamant that only present in one off the, um we're reacting. Okay, So, uh, I wish I was false for the older right up First was coming first and also only have repressing you see Threepio for on the river four force for four from so in the lab, we will have to use force for So we had to a two infant or safe. We pee off safe, we peel for 22 bottles off us for Okay. So there, lex one I'm going to balance will be calcium. So, for calcium, I'm going to put us on six even O C A s I 0 40 Because we have two times three. We have six cows. Him Okay, The lets one and boom times would be say, combi. So forsake on the left. One on the white we have 66 Think on. So I would put us six infront off sync on. You know that the bonds that Okay, so, um ah and then I'm going to the ah carbon from here. Carbon. Um, we don't have one Carbon, um left. So on the way. Ah, you should only have one carbon. So the company's balance at this moment. Okay, so maybe we should do a check on the also genius. Well, some of the left, we will have Ah, two times eight. It's time to again. Calcium. False way. We will have to time for eight time. She was 16 oxygen and then the Rev you have 12. Ah ah, oxygen from ah s I 02 down the reverie rail have 18 Austin from S C s I 03 And also one ostrich of see a cop in. So this is also, you know, what idea is 18 off the harm you? So on the right, we have 19. No surgery when 19 original left, we have 2020 all surgery. So on the left were 20 on the raver have 19 so we need more. Um well, didn't boy also can you know that the violence that Okay, Because they want this arm CEO over here. The carbon can be change can be increased. Amano um oxygen. You ordered two bottles off the oxygen over here. So on the left were 28 on the wife must accord eight. We already have eight from the C s. I also weak. Then the remaining, um, oxygen must be come from the carbon monoxide CEO. So we're going to add the 10 even though common Malagasy, you know, they're do bonds, the oxygen bones, the oxygen. So on their left, we have 12. Ah, 16 were 28 on the right. We have 10% 18 also 20. So we put a 10 in front of CEO. And then we also have to pretend in front of carbon in order to binds the number off. Ah, carbon as well. Okay, so that move on. Um Thio, see? So for C, we have iron. We water. Pootie was ii iron. Umm I am free. 04 And then we have to. So I would first start to bounce the island s so I put a free in benign. So I'm people. We have three on the right and reach. You left me on the left and then we look at the hydrogen. So sorry, Mahajan the oxygen. So he has Ethio for the oxygen. We have fought them. So we're going to put a four, even though our water So it just bonds that. Okay. And then 400 again. We just lit up before you're on the right. The hydrogen and writer parents Everything. Okay, so that's we're sure we're asked to Iseult you. Plus, I'm only a reporters has four and four plus ass eight purse and h for CEO. Okay, so I've read first. Ah, identified ah, compound that I only finding, um, one off the reaction of one of the poet on a prince. And for some free press engine, um has foreign for an estate and also ah, for nitrogen Lee, President Yoon, an itch for CEO and corinne also present only present in a CZ for sale. All right, so let's start. We've Ah, yeah. That's not recording to see if we can't do anything. So the lever asked you. Ah, si out. You on the right. We have. Ah, uh, I'm only ammonia. If we only have one as to see out too. Yeah, we can just put you I'm only over there. However, it would cause a problem. The problem is that the result here So let's stop. We're going to bonds with yourself for with the sulfur. But you can see that the so front of right and the left, they don't have the same number. You keep the sq cm to the same. So ah, from here, apparently we have Thio consider the total up. And also for Maybe you can have us to figure out how to yourself that we'll get so on the right. Us. Ah, savory half force over over here. And also we have Ah, um a silver from our at one of the react in one out of reaction. So four and eight so as we will have 12 uh, 12 sulfur. So you know, the two bands, all these two twelves over Maybe we can at, ah, six Inferno as to see outsiders who have 12. Silvery, huh Uh, after all the reaction. Okay, so, uh, we have sulfur bonds already, so the next one will be our corinne. So because we have us ah, six as to us as to see out to you. So we're going to ah, have ah, six times too. 12. Corinne. So we have to put a 12. You know, I'm only, um, Cory, you know, I'm only, um Cory. Okay, So, uh, if this is okay, if when we have 12 million call, right, and also we have four. Ah, I mean, one s for enforcer were four nitrogen from here. And also we have 12 99 Children from, um Encore. I So on the right, Toto, we will have 16 nitrogen, 16 nitrogen. So we're going to put a 16 19. You fend off the I'm only, um, Cory. Sorry. I'm only, you know, the two points off in nitrogen. Okay, so, uh, let's do a track again. So if we have ah, six, um, as to see how to you, we should have 12 sulfur Sylvia s four s h bonds, and then we would have 12 call, right. We have 12. Ammonium chloride bothers. You have four. I'm Liam court, straight off 12. Only arm William Cory and one s for and for. So we have 16 language in, so we need to put a 16 year front off our I'm only up. Okay. So last salmon that we had, the bonds will be our heart surgeons. So on the left, we have three times 16 90 Transfer your 48 on the right. Where? Four time trough? Um, hydrogen ji Also because of 48. So they're complete buyer's rehash Reaction for the last question will be, ah, six as to, um as to see out you 16 Ashley one and one and as for and for one s eight and 12 and lake for CEO.

## Recommended Questions

Write balanced equations for each of the following by inserting the correct coefficients in the blanks:

(a) $_{-}\mathrm{SO}_{2}(g)+_{-} \mathrm{O}_{2}(g) \longrightarrow_{-}\mathrm{SO}_{3}(g)$

(b) $_{-}\mathrm{Sc}_{2} \mathrm{O}_{3}(s)+_{-}\mathrm{H}_{2} \mathrm{O}(l) \longrightarrow_{-}\mathrm{Sc}(\mathrm{OH})_{3}(s)$

(c) $_{-}\mathrm{H}_{3} \mathrm{PO}_{4}(a q)+_{-}\mathrm{NaOH}(a q) \longrightarrow{_{-}\mathrm{Na}_{2} \mathrm{HPO}_{4}(a q)+}_{-}\mathrm{H}_{2} \mathrm{O}(l)$

(d) $_{-} \mathrm{C}_{6} \mathrm{H}_{10} \mathrm{O}_{5}(s)+_{-} \mathrm{O}_{2}(g) \longrightarrow_{-} \mathrm{CO}_{2}(g)+_{-} \mathrm{H}_{2} \mathrm{O}(g)$

Write balanced equations for each of the following by inserting the correct coefficients in the blanks:

(a) $_{-}\mathrm{Cu}(s)+_{-}\mathrm{S}_{8}(s) \longrightarrow_{-}\mathrm{Cu}_{2} \mathrm{S}(s)$

(b) $_{-}\mathrm{\mathrm{P}}_{4} \mathrm{O}_{10}(s)+_{-}\mathrm{H}_{2} \mathrm{O}(l) \longrightarrow_{-}\mathrm{H}_{3} \mathrm{PO}_{4}(\mathrm{l})$

(c) $_{-}\mathrm{B}_{2} \mathrm{O}_{3}(s)+_{-}\mathrm{NaOH}(a q) \longrightarrow_{-}\mathrm{Na}_{3} \mathrm{BO}_{3}(a q)+_{-}\mathrm{H}_{2} \mathrm{O}(l)$

(d) $_{-}\mathrm{CH}_{3} \mathrm{NH}_{2}(g)+_{-}\mathrm{O}_{2}(g) \longrightarrow_{-}\mathrm{CO}_{2}(g)+_{-}\mathrm{H}_{2} \mathrm{O}(g)+_{-}\mathrm{N}_{2}(g)$

Write balanced equations for each of the following by inserting the correct coefficients in the blanks:

(a) $_{-}\mathrm{Cu}\left(\mathrm{NO}_{3}\right)_{2}(a q)+_{-}\mathrm{KOH}(a q) \longrightarrow _{-}\mathrm{Cu}(\mathrm{OH}_{2}(s)+_{-}\mathrm{KNO}_{3}(a q)$

(b) $_{-}\mathrm {BCl}_{3}(g)+_{-}\mathrm{H}_{2} \mathrm{O}(l) \longrightarrow_{-}\mathrm{H}_{3} \mathrm{BO}_{3}(s)+_{-}\mathrm{HCl}(g)$

(c) $_{-} \mathrm{CaSiO}_{3}(s)+_{-} \mathrm{HF}(g) \longrightarrow$

$_{-}\mathrm{SiF}_{4}(g)+_{-}\mathrm{CaF}_{2}(s)+_{-}\mathrm{H}_{2} \mathrm{O}(l)$

(d) $_{-}(\mathrm{CN})_{2}(g)+_{-} \mathrm{H}_{2} \mathrm{O}(l) \longrightarrow_{-}\mathrm{H}_{2} \mathrm{C}_{2} \mathrm{O}_{4}(a q)+_{-} \mathrm{NH}_{3}(g)$

Balance the following equations:

$$

\begin{aligned}

&\text { (a) } \mathrm{CO}\left(\mathrm{NH}_{2}\right)_{2}(a q)+\mathrm{HOCl}(a q) \longrightarrow\\

&\mathrm{NCl}_{3}(a q)+\mathrm{CO}_{2}(a q)+\mathrm{H}_{2} \mathrm{O}(l)

\end{aligned}

$$

$$

\begin{aligned}

&\text { (b) } \mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2}(s)+\mathrm{SiO}_{2}(\mathrm{~s})+\mathrm{C}(s) \longrightarrow\\

&\mathrm{P}_{4}(g)+\mathrm{CaSiO}_{3}(l)+\mathrm{CO}(g)

\end{aligned}

$$

Write a balanced chemical equation from the formulas of the reactants and products for a reaction; determine the number of atoms in the reactants and products.

Balance each of the following chemical equations:

a. $\mathrm{Ca}(s)+\mathrm{Br}_{2}(l) \longrightarrow \mathrm{CaBr}_{2}(s)$

b. $P_{4}(s)+O_{2}(g) \longrightarrow P_{4} O_{10}(s)$

c. $\operatorname{Sb}_{2} \mathrm{S}_{3}(s)+\operatorname{HCl}(a q) \longrightarrow \operatorname{SbCl}_{3}(s)+\mathrm{H}_{2} \mathrm{S}(g)$

d. $\mathrm{Fe}_{2} \mathrm{O}_{3}(s)+\mathrm{C}(s) \longrightarrow \mathrm{Fe}(s)+\mathrm{CO}(g)$

Balance each of the following equations that describe decomposition reactions.

a. $\mathrm{NI}_{3}(s) \rightarrow \mathrm{N}_{2}(g)+\mathrm{I}_{2}(s)$

b. $\mathrm{BaCO}_{3}(s) \rightarrow \mathrm{BaO}(\mathrm{s})+\mathrm{CO}_{2}(g)$

c. $\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}(s) \rightarrow \mathrm{C}(s)+\mathrm{H}_{2} \mathrm{O}(g)$

d. $\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{SO}_{4}(s) \rightarrow \mathrm{CuSO}_{4}(s)+\mathrm{NH}_{3}(g)$

e. $\mathrm{NaN}_{3}(s) \rightarrow \mathrm{Na}_{3} \mathrm{N}(s)+\mathrm{N}_{2}(g)$

Balance the following equations:

(a) $\mathrm{Cr}(\mathrm{s})+\mathrm{Cl}_{2}(\mathrm{g}) \longrightarrow \mathrm{Cr} \mathrm{Cl}_{3}(\mathrm{s})$

(b) $\mathrm{SiO}_{2}(\mathrm{s})+\mathrm{C}(\mathrm{s}) \longrightarrow \mathrm{Si}(\mathrm{s})+\mathrm{CO}(\mathrm{g})$

(c) $\mathrm{Fe}(\mathrm{s})+\mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \longrightarrow \mathrm{Fe}_{3} \mathrm{O}_{4}(\mathrm{s})+\mathrm{H}_{2}(\mathrm{g})$

Balance the following equations:

(a) $\mathrm{Ag}(s)+\mathrm{H}_{2} \mathrm{S}(g)+\mathrm{O}_{2}(g) \longrightarrow \mathrm{Ag}_{2} \mathrm{S}(s)+\mathrm{H}_{2} \mathrm{O}(l)$

(b) $\mathrm{P}_{4}(s)+\mathrm{O}_{2}(g) \longrightarrow \mathrm{P}_{4} \mathrm{O}_{10}(s)$

(c) $\mathrm{Pb}(s)+\mathrm{H}_{2} \mathrm{O}(l)+\mathrm{O}_{2}(g) \longrightarrow \mathrm{Pb}(\mathrm{OH})_{2}(s)$

(d) $\mathrm{Fe}(s)+\mathrm{H}_{2} \mathrm{O}(l) \longrightarrow \mathrm{Fe}_{3} \mathrm{O}_{4}(s)+\mathrm{H}_{2}(g)$

(e) $\mathrm{Sc}_{2} \mathrm{O}_{3}(s)+\mathrm{SO}_{3}(l) \longrightarrow \mathrm{Sc}_{2}\left(\mathrm{SO}_{4}\right)_{3}(s)$

(f) $\mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2}(a q)+\mathrm{H}_{3} \mathrm{PO}_{4}(a q) \longrightarrow \mathrm{Ca}\left(\mathrm{H}_{2} \mathrm{PO}_{4}\right)_{2}(a q)$

(g) Al(s) $+\mathrm{H}_{2} \mathrm{SO}_{4}(a q) \longrightarrow \mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3}(s)+\mathrm{H}_{2}(g)$

(h) $\mathrm{TiCl}_{4}(s)+\mathrm{H}_{2} \mathrm{O}(g) \longrightarrow \mathrm{TiO}_{2}(s)+\mathrm{HCl}(g)$

For each of the following unbalanced chemical equations, write the corresponding chemical statement.

(a) $\mathrm{S}_{8}+\mathrm{O}_{2} \longrightarrow \mathrm{SO}_{2}$

(b) $\mathrm{CH}_{4}+\mathrm{O}_{2} \longrightarrow \mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O}$

(c) $\mathrm{N}_{2}+\mathrm{H}_{2} \longrightarrow \mathrm{NH}_{3}$

(d) $\mathrm{P}_{4} \mathrm{O}_{10}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{H}_{3} \mathrm{PO}_{4}$

(e) $\mathrm{S}+\mathrm{HNO}_{3} \longrightarrow \mathrm{H}_{2} \mathrm{SO}_{4}+\mathrm{NO}_{2}+\mathrm{H}_{2} \mathrm{O}$

Complete and balance the equations for the following reactions, and identify the type of reaction that each equation represents.

a. $\left(\mathrm{NH}_{4}\right)_{2} \mathrm{S}(a q)+\mathrm{ZnCl}_{2}(a q) \longrightarrow$ _____ $+\mathrm{ZnS}(s)$

b. $\operatorname{Al}(s)+\operatorname{Pb}\left(\mathrm{NO}_{3}\right)_{2}(a q) \longrightarrow$ _____

c. $\mathrm{Ba}(s)+\mathrm{H}_{2} \mathrm{O}(l) \longrightarrow$ _____

d. $\mathrm{Cl}_{2}(g)+\mathrm{KBr}(a q) \longrightarrow$ _____

e. $\mathrm{NH}_{3}(g)+\mathrm{O}_{2}(g) \stackrel{\mathrm{Pt}}{\longrightarrow} \mathrm{NO}(g)+\mathrm{H}_{2} \mathrm{O}(l)$

f. $\mathrm{H}_{2} \mathrm{O}(l) \longrightarrow \mathrm{H}_{2}(g)+\mathrm{O}_{2}(g)$