x mol N2O4 is taken at P1 atm in a closed vessel & heated. When 75% N2O4 dissociated at equilibrium, total pressure is found to be P2 atm. The relation between P1&P2 is
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a
P1:P2=7:4
b
P1:P2=7:2
c
P1:P2=4:7
d
P1:P2=3:4
answer is C.
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Detailed Solution
N2O4⇌2NO2 x 0 0.75x 1.5x_ 0.25x 1.5x Given x moles P1 1.75x moles P2 P1P2=n1n2=x1.75x=47
x mol N2O4 is taken at P1 atm in a closed vessel & heated. When 75% N2O4 dissociated at equilibrium, total pressure is found to be P2 atm. The relation between P1&P2 is