Delta H, Delta S, G, W

Quiz
•
Chemistry
•
11th Grade
•
Hard
+1
Standards-aligned
Charles Martinez
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1. Calculate the standard entropy change for the following reaction: Cu(s)+1/2 O2(g) → CuO(s). Given that
S0 (Cu(s)) = 33.15 J/K*mol
S0 (O2(g)) = 205.14 J/K*mol
S0 (CuO(s)) = 42.5 J/K*mol
195.66 J/K.mol
93.09 J/K.mol
-93.09 J/K.mol
+195.66 J/K.mol
Tags
NGSS.HS-PS3-4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1. Given the following information, calculate ΔG0 for the reaction below at 250C:
SnCl4(l) + 2 H20(l) → SnO2(S) + 4HCl(g),
ΔH0=133.0 kJ and ΔS0 =401.5 J/K
-252.6 kJ
-13.4 kJ
13.4 kJ
252.6 kJ
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Given the following information, calculate ΔG0 for the following reaction below at 250 C: 2H2O2(l) →2H2O(l) + O2(l)
H0 (H2O2(l)) = -187.5 kJ/mol, S0 (H2O2(l)) = 109.6 J/K*mol
H0 (H2O(l)) = -285.8 kJ/mol, S0 (H2O(l)) = 69.9 J/K*mol
H0 (O2(l)) = -, S0 (O2(l)) = 205.1 J/K*mol
-37700 kJ
-342.6 kJ
+233.5 kJ
-233.5 kJ
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the process at 250C : I2(g) →I2(s). What are the signs for ΔG, ΔH and ΔS?
ΔG ΔH ΔS
+ - -
ΔG ΔH ΔS
- - -
ΔG ΔH ΔS
- + +
ΔG ΔH ΔS
- + +
Tags
NGSS.HS-PS1-4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a process is exothermic and not spontaneous, then what must be true?
ΔS > 0
ΔH > 0
ΔG = 0
ΔS < 0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which of the following reactions do you expect to have a decrease in entropy?
Fe(s) →Fe(l)
H2O2(l) →2H2O(l) +O2(g)
2Fe(s) +3/2O2(g)→Fe2O3(s)
HF(l) →HF(g)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The enthalpy of vaporization of methanol (CH30H) is 35.3 kJ/mol at the boiling point of 64.2 0C. Calculate the entropy change for methanol going from a liquid to vapor.
600 J/K.mol
551 J/K.mol
105 J/K.mol
-105 J/K.mol
Tags
NGSS.HS-PS3-4
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