Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

A mixture of 2.0 mol of H2(g) and 1.0 mol of O2(g) is placed in a sealed evacuated container made of a perfect insulating material at 25 C. The mixture is ignited with a spark, and it reacts to form liquid water. Determine the temperature of the water.

$3811.3^{\circ} \mathrm{C}$

Chemistry 102

Chemistry 101

Chapter 9

Thermochemistry

Thermodynamics

Chemical reactions and Stoichiometry

Rice University

University of Kentucky

University of Toronto

Lectures

00:42

In thermodynamics, the zer…

01:47

A spontaneous process is o…

01:18

A mixture of 2.0 $\mathrm{…

05:30

05:23

Hydrogen gives off $120 . …

01:41

Hydrogen gives off $120 .$…

01:51

A 1-g sample of a certain …

01:17

Although mixtures of hydro…

04:12

A $2.00 \times 10^{2}-\mat…

04:43

A $6.0 \times 10^{2}-\math…

03:58

A mixture of 0.0375 g of h…

02:29

A mixture of $\mathrm{H}_{…

02:05

Hydrogen and oxygen react …

03:36

The combustion of hydrogen…

02:25

From the molar heats of fo…

01:13

Two grams of liquid water …

03:16

A $4.00 \times 10^{2}-$ g …

03:26

A $2.00 \times 10^{2}-9$ s…

04:24

A $1.00 \mathrm{kg}$ sampl…

01:22

A mixture of $\mathrm{C}_{…

00:52

A $4.00 \times 10^{2}-9$ s…

02:40

A $50-\mathrm{g}$ ice cube…

So in this problem we have two moles of H two gas reacting with one mall of O two gas to form liquid water which would be to moles in order to balance this equation. And we want to find the final temperature of this liquid water that's formed. And so the first thing we can do is find the Delta h of reaction which is going to be the Delta H formation of the products minus the delta H of formation of the reactant ce Ah, since our reactant SAR both have a zero delta H of formation than our adult H, reaction is going to be just that off water. And so it will be too since we have two moles times negative to eighty five point eight four zero and that'LL give us Ah, negative five seventy one point six eight Kill it, Jules. And so this is our answer for our dealt h of reaction. And now we want to use the equation. Q e equals M c Delta T in order to solve for Delta T and from that at our initial temperature to get our final temperature. And so our massive water Since we have two moles is going to be two malls times the Moler Mass ofwater eighteen point zero one five two eight grams per mole. And so we have thirty six point zero six grams of water. And so now we can plug everything into our heat equation. So our heat is five seven one six eight zero. Jules, we just take our previous heat answer and multiplied by a thousand to convert from killing jewels to Jules. Now we mult are that equals the mass thirty six point zero six grams times the specific heat of water four point one eight six Jules per gram, degree Celsius and that time's Delta's. He will equal our heat. And so if we saw four delta t we get that it is three seven eight, seven point three degrees Celsius and that equals t to minus t one. Ah, we know what our tea one is. It is twenty four degree Celsius. So we add that to our delta t and that gives us the answer forty two, which is three eight one one point three degrees Celsius. And now this problem is a little strange because this is far above the boiling point of water. And so this wouldn't be liquid water. It would be gashes. Water. Ah, but the problem asks for liquid water. And so, uh, so this is our final answer.

View More Answers From This Book

Find Another Textbook

Numerade Educator

In thermodynamics, the zeroth law of thermodynamics states that if two syste…

A spontaneous process is one in which the total entropy of the universe incr…

A mixture of 2.0 $\mathrm{mol}$ of $\mathrm{H}_{2}(g)$ and 1.0 $\mathrm{mol}…

Hydrogen gives off $120 . \mathrm{J} / \mathrm{g}$ of energy when burned in …

Hydrogen gives off $120 .$ J/g of energy when burned in oxygen, and methane …

A 1-g sample of a certain fuel is burned in a bomb calorimeter that contains…

Although mixtures of hydrogen and oxygen are highly explosive, pure elementa…

A $2.00 \times 10^{2}-\mathrm{g}$ sample of water at $80.0^{\circ} \mathrm{C…

A $6.0 \times 10^{2}-\mathrm{g}$ sample of water at $90.0^{\circ} \mathrm{C}…

A mixture of 0.0375 g of hydrogen and 0.0185 mol oxygen in a closed containe…

A mixture of $\mathrm{H}_{2}(\mathrm{g})$ and $\mathrm{O}_{2}(\mathrm{g})$ i…

Hydrogen and oxygen react under a specific set of conditions to produce wate…

The combustion of hydrogen-oxygen mixtures is used to produce very high temp…

From the molar heats of formation in Appendix $\mathrm{G}$ , determine how m…

Two grams of liquid water are at $0^{\circ} {C},$ and another two grams are …

A $4.00 \times 10^{2}-$ g sample of methanol at $16.0^{\circ} \mathrm{C}$ is…

A $2.00 \times 10^{2}-9$ sample of water at $80.0^{\circ} \mathrm{C}$ is mix…

A $1.00 \mathrm{kg}$ sample of magnesium at $40.0^{\circ} \mathrm{C}$ is add…

A mixture of $\mathrm{C}_{3} \mathrm{H}_{8}$ and $\mathrm{C}_{2} \mathrm{H}_…

A $4.00 \times 10^{2}-9$ sample of methanol at $16.0^{\circ} \mathrm{C}$ is …

A $50-\mathrm{g}$ ice cube at $-10^{\circ} \mathrm{C}$ is placed in an equal…

00:40

Which expression describes the heat emitted in a chemical reaction when the …

17:53

Consider the titration of a 25.0-mL sample of 0.115 M RbOH with0.100 M H…

06:45

Calculate the vapor pressure of a solution containing 24.5 g ofglycerin(…

05:59

Most vitamins can be classified either as fat soluble, which results in thei…

01:00

Which statement is true of the internal energy of the system and its surroun…

09:54

Potassium hydroxide is used to precipitate each of the cationsfrom their…

01:21

Consider the generic reaction:

Determine the value of H for each re…

11:40

A solution contains 4.08 g of chloroform(CHCl3) and 9.29 g ofacetone(CH3…

01:50

Determine the number of protons and the number of electrons in each ion.

01:49

Draw the Lewis symbols for the atoms Al and O. Use the Lewis model to determ…