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A vessel of volume v = 5 litre contains 1.4 g nitrogen and 0.4 g of h3

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A vessel of volume 5 litre contains 1.4g of nitrogen at temperature 1800K. Find the pressure of the gas if 30%30%of its molecules are DISSOCIATED into atoms at this temperature.

(a)2.92atm(b)1.92atm(c)3ATM(d)1atm(a)2.92atm(b)1.92atm(c)3atm(d)1atm

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asked Feb 20, 2014 by sharmaaparna1 
retagged Sep 17, 2014 by sharmaaparna1



1 Answer

N2⟺2NN2⟺2N

Initial Moles of N2=1.428N2=1.428

Initial Mole of 2N = 0

Mole after dissociation of N2=1.428×70100N2=1.428×70100

Moles after dissociation of 2N = 1.428×2×301001.428×2×30100

Total Mole = 1.428×70100+1.4×60100×281.428×70100+1.4×60100×28

=1.428×[130100]=1.428×[130100]

P×5=1.4×13028×100×0.0821×1800P×5=1.4×13028×100×0.0821×1800

P = 1.92 atm



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