The dissociation constants of a weak acid HA and weak base BOH are 2×10−5 and 5×10−6 respectively. The equilibrium constant for the neutralisation reaction of the two is :
1.0×104
1.0×10−10
2.5×10−1
1.0×10−4
A
1.0×104
B
2.5×10−1
C
1.0×10−4
D
1.0×10−10
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Solution
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For the neutralization reaction of a weak acid and weak base, the expression for the equilibrium constant K is as given below.
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