alleryThe slope of an isothermal curve in PV diagram (dP/dV)_T equals:
A-P/V
B-nRT/V
C-(nRT/V)²
D-nRT/V²
Answer & Solution
Correct answer: A. -P/V
At constant T: PV = nRT → P = nRT/V. Differentiating: dP/dV = -nRT/V² = -P/V.
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