During the estimation of nitrogen in an organic compound by Kjeldhal's method, the ammonia evolved from 0.5g of the compound was absorbed in 50 ml of 0.5 M H_(2)SO_(4). The residual acid required 60 ml of 0.5 M NaOH solution.What volume of H_(2)SO_(4) is used by NH_(3) in the process

During the estimation of nitrogen in an organic compound by Kjeldhal's

1.	During the estimation of nitrogen in an organic compound by Kjeldhal's method, the ammonia evolved from 0.5g of the compound was absorbed in 50 ml of 0.5 M H_(2)SO_(4). The residual acid required 60 ml of 0.5 M NaOH solution.What volume of H_(2)SO_(4) is used by NH_(3) in the process
Answer» 50 ml 10 ml 20 ml 30 ml Solution :No. of m. eq. of acid left over `= 60xx0.5xx1=30` No. of m.eq. of acid TAKEN `= 50xx0.5xx2=50` No. of m. eq. of acid UTILISED `= 50-30=20` = No. of m. eq. of `NH_(3)` LIBERATED.