$\quad 1\quad \quad \quad\quad- \quad \quad\quad-$
$\quad 1-\alpha\quad \quad \quad \alpha \quad \quad\quad 2 \alpha$
$\quad 0.535\quad \quad \quad\quad0.465 \quad \quad\quad0.93$
$1.9 \times 25= n _{ T } \times 0.08206 \times 300$
$n _{ T }=1.93=1+2 \alpha$
$\alpha=0.465$
$Kp =\frac{\left(\frac{0.465}{1.93} \times 19\right)\left(\frac{0.93}{1.93} \times 1.9\right)^{2}}{\left(\frac{0.535}{1.93} \times 1.9\right)}$
$\simeq 73 \times 10^{-2}\, atm ^{2}$
$X:2S{O_2} + {O_2} \rightleftharpoons 2S{O_3}$
$Y:PC{l_5} \rightleftharpoons PC{l_3} + C{l_2}$
$Z:2HI \rightleftharpoons {H_2} + {H_2}$
$[R = 8.314 \,J/K/mol, e= 2.718]$
${N_2}(g) + {O_2}(g) \rightleftharpoons 2NO(g)$
${N_2}{O_4}(g) \rightleftharpoons 2N{O_2}(g)$
${N_2}(g) + 3{H_2}(g) \rightleftharpoons 2N{H_3}(g)$