💬 👋 We’re always here. Join our Discord to connect with other students 24/7, any time, night or day.Join Here!
Get the answer to your homework problem.
Try Numerade free for 7 days
Like
Report
$\mathrm{H}_{2}$ is produced by the reaction of 118.5 $\mathrm{mL}$ of a $0.8775-\mathrm{M}$ solution of $\mathrm{H}_{3} \mathrm{PO}_{4}$ according to the followingequation: $2 \mathrm{Cr}+2 \mathrm{H}_{3} \mathrm{PO}_{4} \longrightarrow 3 \mathrm{H}_{2}+2 \mathrm{CrPO}_{4}$
(a)1. Find the number of moles of $\mathrm{H}_{3} \mathrm{PO}_{4}$ using molarity $=\frac{\text { number of moles }}{\text { volume in } \mathrm{L}}$ .2. Using the coefficients of the balanced equation, find the number ofmoles of $\mathrm{H}_{2}$ that reacts with the known amount of $\mathrm{H}_{3} \mathrm{PO}_{4}$3. Find the mass of $\mathrm{H}_{2}$ from the number of moles using its molar mass. (b) $0.1560 \mathrm{mol} \mathrm{H}_{2}, 0.3145 \mathrm{g} \mathrm{H}_{2}$
00:44
Sisi G.
Chemistry 101
Chapter 4
Stoichiometry of Chemical Reactions
Chemical reactions and Stoichiometry
Carleton College
University of Central Florida
University of Maryland - University College
Lectures
02:29
Chemistry is the science o…
04:42
In chemistry and physics, …
06:40
Calculate $\Delta H_{\math…
03:32
A $5.00 \mathrm{mL}$ sampl…
01:03
A 20.00 mL sample of $\mat…
03:07
For the reaction $\mathrm{…
00:55
Which of the following is …
01:05
A 10.0 -mL sample of an un…
04:54
a. Balance this equation: …
06:56
Use Equations a and b to d…
03:19
Write equations for the re…
03:37
00:53
What is an autoionization …
03:46
Calculate $\Delta H$ for
00:41
A $25.00 \mathrm{mL}$ samp…
00:47
02:28
Potassium permanganate $\l…
13:57
Consider this reaction:
00:37
Write the chemical equatio…
02:53
Calculate the concentratio…
01:58
in question. 46. You provided a balanced chemical reaction. As shown here, you're supposed to outline the steps necessary to determine the moles and mass of H. Two. Given a volume and polarity of phosphoric acid, you'll first convert the mill leaders of phosphoric acid into leaders phosphoric acid. Then convert the leaders phosphoric acid into molds of phosphoric acid. Using the polarity of phosphoric acid, Then when you have moles phosphoric acid, you can use the stock geometry of the balanced chemical reaction to convert the molds phosphoric acid into moles of H two. Then you'll convert the moles of H two into grams of H two by multiplying by the molar mass of H two. So it'll look something like this. 118.5 mL converted to leaders by dividing by 1000. The leaders can then be converted into molds of phosphoric acid by multiplying by the polarity of phosphoric acid, which is provided at 0.8775 Mueller. Then when we have moles, phosphoric acid will convert two moles of hydrogen gas, seeing that it is a 2 to 3 relationship, and this will give us malls of hydrogen gas 0.1560 and then last of all to get the grams Step four, we're going to multiply by the molar mass of age, to which is 2.16 and we get 0.3144 g of H two being produced from the complete reaction of 100 and 18 mL of phosphoric acid at 8775 Mueller.
View More Answers From This Book
Find Another Textbook
Numerade Educator
Chemistry is the science of matter, especially its chemical reactions, but a…
In chemistry and physics, matter is any substance that has mass and takes up…
Calculate $\Delta H_{\mathrm{rxn}}$ for the reaction:$$\mathrm{CH}_{…
A $5.00 \mathrm{mL}$ sample of an aqueous solution of $\mathrm{H}_{3} \mathr…
A 20.00 mL sample of $\mathrm{H}_{3} \mathrm{PO}_{4}$ (aq) requires $18.67 \…
For the reaction $\mathrm{C}_{2} \mathrm{H}_{4}(\mathrm{g})+\mathrm{Cl}_{2}(…
Which of the following is the expected product of the reaction of $\mathrm{K…
A 10.0 -mL sample of an unknown $\mathrm{H}_{3} \mathrm{PO}_{4}$ solution re…
a. Balance this equation: H_ $\mathrm{PO}_{4}+\mathrm{Ca}(\mathrm{OH})_{2} \…
Use Equations a and b to determine $\Delta H$ for the following reaction.
Write equations for the reaction of 2 -butanol with these reagents.(a) $…
Calculate $\Delta H_{\mathrm{rxn}}$ for the reaction:$$\mathrm{CaO}(…
What is an autoionization reaction? Write equations for the autoionization r…
Calculate $\Delta H$ for$$2 \mathrm{NOCl}(g) \longrightarrow \mathrm{N}_…
A $25.00 \mathrm{mL}$ sample of $\mathrm{H}_{3} \mathrm{PO}_{4}(\text { aq) …
Calculate $\Delta H_{\mathrm{rxn}}$ for the reaction.$$\mathrm{CaO}(s)+\…
Calculate $\Delta H_{\mathrm{rxn}}$ for the reaction.$$\mathrm{Fe}_{2} \…
Potassium permanganate $\left(\mathrm{KMnO}_{4}\right)$ reacts with oxalic a…
Consider this reaction:$$\begin{array}{r}2 \mathrm{CH}_{3} \mathrm{O…
Write the chemical equation for the reaction that wouldoccur when a base…
Calculate the concentrations of $\mathrm{H}_{3} \mathrm{O}^{+}$ and $\mathrm…
Calculate $\Delta H_{\mathrm{rxn}}$ for the reaction:$$\mathrm{Fe}_{…
02:42
A sample of sulfur weighing 0.210 $\mathrm{g}$ was dissolved in 17.8 $\mathr…
01:27
Explain what changes and what stays the same when 1.00 $\mathrm{L}$ of a sol…
03:42
Nitrogen monoxide reacts with chlorine according to the equation: $2 {NO}(g)…
01:43
Sketch a qualitative graph of the pressure versus time for water vapor above…
00:48
It is often recommended that you let your car engine run idle to warm up bef…
01:18
Write the resonance forms of ozone, O3, the component of the upper atmospher…
03:33
Calculate the mole fraction of each solute and solvent:(a) 0.710 kg of s…
01:54
Explain the difference between electron-pair geometry and molecular structur…
02:54
The enthalpy of combustion of hard coal averages $-35 \mathrm{kJ} / \mathrm{…
03:06
What is osmotic pressure of a solution of bovine insulin (molar mass, 5700 $…
