Homework Help: chemistry

Posted by Anonymous on Wednesday, October 6, 2010 at 12:52am.

If the initial pressure of H2S(g) is 7.404 atm, calculate the % decomposition of H2S(g) when the reaction comes to equilibrium according to the balanced equation. The value of Kp at 1132 °C is 0.0265. The initial pressure of the reaction products is 0 atm.

chemistry - DrBob222, Wednesday, October 6, 2010 at 4:36pm
Is the equation given as
H2S --> H2 + S

Set up ICE chart and substitute into Kp.
Initial:
pH2 = 0
pS = 0
pH2S = 7.404

change:
S = +x
H2 = +x
H2S = -x

equilibrium:
S = x
H2 = x
H2S = 7.404-x

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