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The EMF of the following cell is -0.46 V...

The EMF of the following cell is -0.46 V
`Pt,H_(2) ("1 atm")| HSO_(3)^(-) (0.4M), SO_(3)^(-2) (6.4 xx 10^(-3)M)||Zn^(+2) (0.3M)|Zn" if "HSO_(3)^(-)=-0.76V`, Calculate `K_(a)" of "HSO_(3)^(-)` i.e. for the equilibrium `HSO_(3)^(-) Leftrightarrow H^(+) +SO_(3)^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
`7.36 xx 10^(-8)`
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