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Pls help me to solve this.this is from gaseous state answer given is 8 but i am getting 6.

Pls help me to solve this.this is from gaseous state answer given is 8 but i am getting 6.

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Grade:12th pass

2 Answers

Aastha Singh
askIITians Faculty 212 Points
5 years ago
dear stude
Vikas TU
14149 Points
5 years ago
Using equation PV=nRT
The number of moles of N2, CO2 and N2 in A
P=60 atm
V=12.315 litres = 12.315 X 10-3 M3
R= 8.314JK-1mol
T = 27+ 273= 300K
n =PV/RT = 2.962 x 10^-4
Number of moles CO2 and N2 after liquefaction of NH3
P=17-1=16 atm  due to vapour pressure of ammonia
V= 12.315x2 litres= 24.63x10-3 M3
T= -73+273 = 200K
n= PV/RT gives 2.37 x10-4
 
Moles of N2
Take P=4, V=12.315x 3 litres=36.945x10-3 M3  T=-173=273= 100
Then substitute the values in the eaquation n,  it gives 1.778x10-4
Moles of ammonia =(2.962-2.37)x10-4 =0.592x10-4
Moles of N2 = (2.37-1.778)x10-4 = 0.593x10-4

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