Question

A vessel of volume V .= 5.0 l contains m = 1.4 g of nitrogen at a temperature T = 1800 K. Find the gas pressure,

Answer 1

N2⟺2N  

Initial Moles of N2=1.428

Initial Mole of 2N = 0

Mole after dissociation of N2=1.428×70100

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

Total Mole = 1.428×70100+1.4×60100×28

=1.428×[130100]

P×5=1.4×13028×100×0.0821×1800

P = 1.92 atm

hope this helped you :D