Question

What is the mass of 2 litre of Nitrogen at 22.4 atmospheric pressure and 273K.
(a) 28gram
(b) 14 * 22.4 gram
(ć) 56 gram
(d) None of these.

Answer 1

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Answer 2

Answer:

(a) 28 gram

Explanation:

We know,

PV=nRT                                         (Ideal gas equation)

Given:   V=2*10^-3

            P = 22.4atm = 22.4*1.013*10^5 = 22.6*10^5

            T = 273K

PV=(m/M)RT                                   ( since, n=m/M)

m=PVM/RT

=22.6*10^5*2*10^-3*14*/8.3*273

=22.6*28*10^2/2265.9

=22.6*28/22.6

=28g