Delta H, Delta S, G, W

Delta H, Delta S, G, W

11th Grade

10 Qs

quiz-placeholder

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Delta H, Delta S, G, W

Delta H, Delta S, G, W

Assessment

Quiz

Chemistry

11th Grade

Hard

NGSS
HS-PS1-4, HS-PS3-4, HS-PS1-6

+1

Standards-aligned

Created by

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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