Equilibrium Question 853

Question: The dissociation constants of a weak acid HA and weak base BOH are 2×105 and 5×106 respectively. The equilibrium constant for the neutralisation reaction of the two is

Options:

A) 1.0×104

B) 1.0×104

C) 1.0×1010

D) 2.5×101

Show Answer

Answer:

Correct Answer: A

Solution:

HA+BOHBA+H2O

KH=KwKa×Kb. The inverse of KH is Kc=Ka×KbKw.

=2×105×5×1061×1014=1.0×104



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