Question

A cube of length ‘l’ has a gas enclosed at N.T.P. it is shifted to another cube where the temperature is 546K and pressure is 0.5atm. From this information can you find the length of the second cube.
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Answer 1

Explanation:

The reaction involved, dissociation of nitrogen gas

N

2

⇌2N

mass of nitrogen =1.4g

⇒moles=1.4/28=0.05

moles after dissociation of N

2

=0.05×70/100

and after dissociation of 2N=0.05×2×30/100

total moles involved =0.065

applying ideal gas equation (PV=nRT)

P=(nRT)/V

=1.92atm