Chemical Thermodynamics Question 267

Question: Enthalpy of neutralisation of acetic acid by NaOH is 50.6,kJ/mol. and the heat of neutralisation of a strong acid with a strong base is - 55.9 kJ/mol. What is the value of ΔH for the ionisation of CH3COOH [AIIMS 2000]

Options:

A) + 5.3 kJ/mol

B) + 6.2 kJ/mol

C) + 8.2 kJ/mol

D) + 9.3 kJ/mol

Show Answer

Answer:

Correct Answer: A

Solution:

ΔH=,ΔHioniz+ΔHneu = ,50.6=,ΔHioniz+(55.9)

ΔHioniz=+,5.3,kJ/mol .



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