Chemistry, asked by srishti3225, 1 year ago

A 5L vessel contains 1.4g nitrogen gas when heated to 1800K, 30% of the molecules are dissociated into atoms.Calculate the pressure of the gas at 1800K.

Answers

Answered by sandeep189
5
Since some of the nitrogen gas is dissociated into atoms, the vessel will now contains a mixture of molecular nitrogen and atomic nitrogen. Let us assume the partial pressure of ​molecular nitrogen and atomic nitrogen be equal to p1 and p2, respectively.

Hence,

mass of molecular nitrogen, m1 = 1.4×70100=0.98 g

mass of atomic nitrogen, m2 = 1.4 - 0.98 = 0.42g

According to Dalton's law, Total pressure P = p1 + p2

P=p1+p2=n1RTV+n2RTV=(0.9828×0.0821×18005)+(0.4214×0.0821×18005)P = 1.0344 + 0.887 = 1.9214 atm


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