February 28, 2017

Homework Help: Chemistry

Posted by Jamal on Sunday, December 19, 2010 at 11:38am.

A mixture of 0.47 mole of H2 and 3.59 moles of HCl is heated to 2800C. Calculate the equilibrium partial pressures of H2 Cl2 and HCl if the total pressure is 2.00 atm. For the reaction Kp is 193 at 2800C.

H2(g) +Cl2(g) = 2HCl (g)

What I've done so far:

found the partial pressures of HCl and H2 by taking moles x / moles total = mole fraction x total pressure (2?)

1.77 atm for HCl
.233 atm for H2

Plugged into ICE chart but I'm not getting the right answer. These are supposedly the right answers:
HCl: 1.67 atm
H2: .282 atm
Cl2: .051

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