Posted by Jamal on Sunday, December 19, 2010 at 11:38am.
Your solution is not getting the right answers for two or three reasons.
a. You don't have a value for moles Cl2; therefore, you don't have total moles.
b. The moles given are at the start of the reaction (not at equilibrium) BUT total pressure of 2 atm is at equilibrium.
Here is how you approach the problem.
First, notice that you have two moles of products and two moles of reactants; therefore, Kp = Kc. Also note that you don't have a volume; however, moles/volume will give concn BUT the V term cancels in the Kc expression so we can ignore that (and I have ignored it below). You can assume some volume if it makes you feel any better but it cancels in the end, whatever you choose.
........H2 + Cl2 ==> 2HCl
I....0.47.....0.......3.59
C.....+x.....+x.......-2x
E.....0.47+x...x.......3.59-2x
Kp=Kc=(HCl)^2/(H2)(Cl2)
193 = (3.59-2x)^2/(0.47+x)(x)
solve for x.
Add moles to find total moles AT EQUILIBRIUM.
Then X*totalP will find partial pressures of each.
I worked the problem and the answers are correct.
Post your work if you get stuck.
Got it. Thanks man.
Related Questions
Chemistry - A mixture of 0.47 mole of H2 and 3.59 moles of HCl is heated to ...
chem - In an equilibrium mixture of HCl, Cl2 and H2, the partial pressure of H2 ...
Chemistry - At 400°C the reaction H2+I2<->2HI has an ...
science-chemistry - please anwser soon, a rigid 4.10L flask contains a mixture ...
chemistry - A mixture of 1.441 g of H2 and 70.24 g of Br2 is heated in a 2.00-L ...
CHEMISTRY - Equilibrium Equation with Partial Pressures PCl3(g) +Cl2(g) <...
Chemistry - At 1473K the equilibrium constant for the reaction H2(g) + Cl2(g) &...
chemistry - A 1L flask is filled with 1.000atm of H2 and 2.000atm of I2 at 448*C...
Chemistry - 3H2(g)+N2(g)=2NH3(g) Suppose the equilibrium constant Kp = 0.003337 ...
Chemistry - Need help in AP chemistry on Equilibrium When heated, hydrogen ...
For Further Reading
