0 . 8 g of an organic compound was analysed by Kjeldahl's method for the estimation of nitrogen. If the percentage of nitrogen in the compound was found to be 42 % , then....... mL of 1 M H 2 SO 4 would have been neutralized by the ammonia evolved during the analysis.

Step-by-step solution

Organic compound : 0 . 8   gm wt. of N = 42 100 × 0 . 8 gm mole of N = 42 × 0 . 8 100 × 14 = 2 . 4 100   mol moles of NH 3 = 2 . 4 100 Molarity   ×   Volume   ( L )   =   number   of   moles 1 . 2 100 = 1 × V ( L ) ⇒ V H 2 SO 4 = 1 . 2 100 L = 12   mL