XY2 dissociates XY2(g)⇌XY(g)+Y(g) .When the initial pressure of XY2 is 600mm Hg, the total equilibrium pressure is 800 mm Hg.Calculate K for the reaction .Assuming that the volume of the system remains unchanged
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a
50.0
b
100.0
c
166.6
d
400.0
answer is B.
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Detailed Solution
XY2⇌XY+Y Initial P 0 0Final P-x x xInitial P=600 mm Hg.Final P=800 mmHg Total mole ∝ final PP-x+x+x∝ 800600-x+x+x∝ 800x = 200 mm Hg∝K=x×xP−x=200×200400=100 Hg