Q.

For the following reactions, equilibrium constants are indicated on the arrow. 

H3PO4K1H++H2PO4 H2PO4K2H++HPO42
HPO42K3H++PO43

Then the equilibrium constant for the reaction H3PO43H++PO43 will be

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a

K1×K2×K3

b

1K1K2K3

c

K1+K2+K3

d

K1K2K3

answer is C.

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Detailed Solution

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when equilibrium reactions are added their equilibrium constants are multiplied

K1×K2×K3=K=H+3PO43H3PO4

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