During estimation of nitrogen by Dumas' method of compound X (0.42 ~g ) : _____ mL of N ₂ gas will be liberated at STP. (nearest integer) (Given molar mass in g mol ⁻¹: C : 12, H : 1 , N : 14)

Step-by-step solution

M.wt. of given compound =86 Applying POAC on ' N ' aligned & n _ X 2= n _ N ₂ 2 & 0.42 86 = n _ N ₂ & ( Volume )_ N ₂ at STP = 0.42 86 22.4 ~L & =0.1108 ~L =110.8 ~m aligned