Chemical EquilibriumMedium
Question
For the reaction XY2(g) $\rightleftharpoons$XY(g) + Y(g), the reaction is started with initial pressure of XY2, 600 mm Hg. The total pressure for gases at equilibrium is 800 mm Hg. Assuming that volume and temperature of the system remains constant, the value of KP is
Options
A.100 atm
B.100 mm Hg
C.0.01 atm
D.400 mm Hg
Solution
XY2 $\rightleftharpoons$ XY + Y
600 mm 0 0
Equilibrium (600 – x) mm x mm x mm
From Question: (600 – x) + x + x = 800 ⇒ x = 200
$\therefore K_{p} = \frac{x.x}{(600 - x)} = 100\text{ mm Hg}$
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