CHEM125 – REVIEW ACS V

REVIEW ACS V

Resources: 

Have you found videos, websites, or explanations that helped you understand this chapter? Let us know and we’ll add them to “Resources” part of this page for other students to use.

Answer Explanations Coming Soon!

Question 1

Calculate the change in enthalpy for the chemical reaction N2(g) + 3H2(g) –> 2NH3(g) Select one: chem125-acsv - Fluff Butt Reviews

Explanation

Question 2

In a Styrofoam coffee cup calorimeter with a lid, the experiment takes place Select one: chem125-acsv - Fluff Butt Reviews

Explanation

Question 3

chem125-acsv - Fluff Butt Reviews

Explanation

Question 4

The following question is from the ACS Study Guide. It would be better to ask which diagram best represents the change in enthalpy for the dissolution process. Select one: chem125-acsv - Fluff Butt Reviews

Explanation

Question 5

When a 86 g sample of an alloy at 100.0 oC is dropped into 90.0 g of water at 26.2 oC, the final temperature is 30.3 oC. What is the specific heat of the alloy? (The specific heat of water is 4.184 J/(goC).) chem125-acsv - Fluff Butt Reviews

Explanation

Question 6

For which of the following reaction is the enthalpy of formation of the compound equal to the ΔH of reaction? Select one: chem125-acsv - Fluff Butt Reviews

Explanation

Question 7

What is the enthalpy of formation of CO(g) in kJ? 2CO(g) + O2(g) –> 2CO2(g). ΔH reaction = -566 kJ ; ΔH CO2(g) =-393.5 kJ/mol. chem125-acsv - Fluff Butt Reviews

Explanation

Question 8

When a liquid freezes and then melts, the steps are Select one: chem125-acsv - Fluff Butt Reviews

Explanation

Question 9

It takes more energy to boil away a pan of water at 100 oC than to heat it from room temperatue to 100 oC, because Select one: chem125-acsv - Fluff Butt Reviews

Explanation

Question 10

chem125-acsv - Fluff Butt Reviews

Explanation

Question 11

When 192 J of energy are added to a sample of gallium that is initially at 25.0 oC, the temperature rises to 35.0 oC. What is the volume of the sample in cubic centimeter? chem125-acsv - Fluff Butt Reviews

Explanation