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One mole of H2O and one mole of CO are t...

One mole of `H_2O` and one mole of CO are taken in a 10L vessel and heated to 725K. At equilibrium `40%` of water (by mass) reacts with CO according to the equation
`CO(g)+H_2O(g) iff H_2(g)+CO_2(g)`
Calculate the equilibrium constant for the reaction.

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