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14-11-2017
Chemistry

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Which expression represents the equilibrium constant expression for sulphurous acid (H2SO3)?

Which expression represents the equilibrium constant expression for sulphurous acid H2SO3 class=

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Edufirst Edufirst

15-11-2017

1) Equilibrium reaction:

[tex]H_2SO_3=H^++HSO_3^-[/tex]

2) Equilibrium constant

[tex]Ka= \frac{[H^+][HSO_3^-]}{[H_2SO_3]} [/tex]

The answer is the second option but it has a mistake because it is the ion HSO3 has oxidation state 1- and not 2-.

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