Quiz on Thermodynamics

Quiz on Thermodynamics Spontaneity Equilibrium

Introduction to Equilibrium Thermodynamics and Spontaneity

1. There are two properties of a reacting system that determine whether a process at constant pressure and temperature can occur spontaneously. These are

 
 
 
 

2. Identify the INCORRECT statement below

 
 
 
 
 

3. Which response includes all the following processes that are accompanied by an INCREASE in entropy, and only those processes?

I. boiling water
II. freezing water
III. N2(g) + 3 H2(g) → 2 NH3(g)
IV. Br2(l) → Br2(g)
 
 
 
 
 

4. Which process is accompanied by a decrease in entropy of the materials?

 
 
 
 
 

5. Use the data in the table to calculate the ΔGo of the following reaction at 298 K:

Al2O3(s) + 6 HCl(aq) → 2 AlCl3(s) + 3 H2O(l)

SPECIES

 ΔH°f at 298 K (kJ/mol)  ΔG°f at 298 K (kJ/mol)

Al2O3(s)

-1675.7

-1582.3

HCl(aq)

-167.16

-131.2

AlCl3(s)

-704.2

-628.8

H2O(l)

-285.8

-237.1

 

 
 
 
 
 

Question 1 of 5

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