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The Kp value for the reaction equilibr...

The `K_p` value for the reaction equilibrium:
`H_2(g) + I_2 (s) iff 2HI(g)`
is 871 at `25^@C` . If the vapour pressure of iodine is `4 xx 10^(-4)` atm, calculate the equilibrium constant in terms of partial pressures at the same temperature.

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0.3484 atm
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