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Given HF + H2O hArr H3O^(+) + F^(-) :...

Given `HF + H_2O hArr H_3O^(+) + F^(-) : K_a`
` " " F^(-) +H_2O hArr HF +OH^(-) ,K_b `
Which of the following relations is correct ?

A

`K_(b) = K_(w)`

B

`K_(a) xx K_(b) = K_(w)`

C

`K_(b) = (1)/(K_(w))`

D

`(K_(a))/(K_(b)) = K_(w)`

Text Solution

Verified by Experts

The correct Answer is:
B
Add two equaitons to get:
`K_(a) xx K_(b) = K_(w)`
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CENGAGE CHEMISTRY ENGLISH-IONIC EQUILIBRIUM-Ex 8.2
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