The Ka for CH3COOH at 300 and 310 K are 1.8×10−5 and 1.805×10−5, respectively. The enthalpy of deprotonation for acetic acid is 51.6 cal.
A
True
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B
False
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Solution
The correct option is A True The Van 't Hoff equation is as shown. ln(K2K1)=−ΔHR(1T2)−1T1 Substitute values in the above equation. ln(1.805×10−51.8×10−5)=−ΔH2(1310−1300) −ΔH=51.6 cal