I need pressure and Kp please...
Homework Answers
Answer
Equilibrium pressure of H2 = 291 torr
Kp= 675.5
Explanation
2AsH3(g) <-----> 2As(s) + 3H2(g)
Kp = (PH2)3/(PAsH3)2
at equilibrium ,
PAsH3 = 385.0 - 2x
PH2 = 3x
After 48 hours reaction reaches equilibrium and the total pressure is 482.0 torr
(385.0 - 2x) + 3x = 482.0
x = 97 torr
PAsH3 = 385.0 - 2(97)= 191 torr
PH2 = 3 × 97 = 291 torr
Kp = ( 291 torr)3/(191torr)2
Kp = 675.5
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