
Chapter 17 - Quiz
Authored by Gülşah Gül
Chemistry
University
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a spontaneous change?
Sugar dissolving in water
Freezing of water at room temperature
Diffusion of gas from low pressure to a high pressure
Flow of heat from cold body to a hot body
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the entropy when a solid melts?
Entropy decreases
Entropy remains the same
Entropy increases
Entropy cannot be determined
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of substances have lower entropy?
Gases
Solids
Liquids
Aqueous solutions
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the entropy change of the system for the reaction 2Ca(s) + O2(g) → 2CaO(s)?
Increases
Decreases
Remains constant
Can not be calculated
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which combination of ΔH and ΔS never has a spontaneous reaction? (Hint: ΔG = ΔH - TΔS)
+ΔH and +ΔS
-ΔH and +ΔS
+ΔH and -ΔS
-ΔH and -ΔS
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