
Quiz Gibbs, Entropy, Enthalpy
Authored by Aaron Vincent
Chemistry
10th Grade
NGSS covered
Used 13+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which phase of matter has the greatest motion and least orderly arrangement?
Tags
NGSS.MS-PS1-4
NGSS.MS-PS3-4
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A catalyst works by
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
6. The formation ½ A2 + 2 B2 + C --> CAB4 has an enthalpy of formation of -104 kJ and a change in entropy of -60.8 J/K at 30 °C. What is the free energy and spontaneity of the reaction?
Tags
NGSS.HS-PS1-4
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which one of the following is always positive when a spontaneous process occurs?
ΔH univ
ΔH surr
ΔS surr
ΔS univ
ΔS sys
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
ΔS will be positive for the reaction
2H2 (g) + O2 (g) -> 2H2O (g)
2NO2 (g) -> N2O4 (g)
BaF2 (s) ->Ba2+ (aq) + 2F- (aq)
2Hg (l) + O2 (g) ->2HgO (s)
Tags
NGSS.HS-PS1-4
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A reaction that is not spontaneous at low temperature can become spontaneous at high temperature if ΔH is __________ and ΔS is __________.
+, +
-, -
+, -
-, +
+, 0
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which of these have a DECREASE in entropy?
CaCO3(s) → CaO(s) + CO2(g)
2NO2(g) → N2O4(g)
2NH3(g) → 3H2(g) + N2(g)
C6H6(l) → C6H6(g)
Tags
NGSS.HS-PS3-4
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