Chemistry
NULL
Medium
Question
For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as___________________?
A
qp = qv
B
qp < qv
C
qp > qv
✓ Official correct answer
D
qp = qv / 2
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A
qp = qv
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B
qp < qv
No member explanations yet for this option.
C
qp > qv
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D
qp = qv / 2
No member explanations yet for this option.
Explanation
For reactions where the number of gas moles increases, the heat released or absorbed at constant pressure (qp) is generally greater than at constant volume (qv), since additional energy is needed to do expansion work against the surroundings.
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