XY2 (g) dissociates as XY(g)+Y(g). When the initial pressure is 600 mm of Hg, the total pressure at equilibrium developed is 800 mm of Hg. Therefore pressure of Y at equilibrium is
A
200
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B
50
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C
100
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D
150
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Solution
The correct option is A 200 Initialpressurexy2(g)600mm⇌xy(g)+y(g)atequilibrium600−p1p1p1
Total pressure at equilibrium =600−p1+p1+p1 =600+p1 600+p1=800 p1=800−600=200mm of Hg