X g of nitrobenzene on nitration gave 4.2 g of m-dinitrobenzene. X =______ g. (nearest integer) [Given : molar mass (in g mol ⁻¹ ) C : 12, H : 1 , O : 16, ~N : 14]

Step-by-step solution

array ll C ₆ H ₅ NO ₂ & MF = C ₆ H ₄ ~N ₂ O ₄ MW =123 & MW =168 & 4.2 168 =0.025 ~mol array required gm of nitro benzene aligned & =123 0.025 & =3.075 aligned Nearest integer is 3