In Kjeldahl's method, the gas evolved from 1.325 g sample of a fertiliser is passed into 50 ml of 0.2030 N `H_2 SO_4 `.25.32 ml of 0.1980 N NaOH are required for the titration of unused acid. Calculate the percentage of nitrogen in the fertiliser.

0.303 g of an organic compound was analysed for nitrogen by Kjeldahl's method. The ammonia evolved was absorbed in 50 ml of 0.1 N H_2 SO_4 . The excess acid required 25 ml of 0.1 N NaOH for neutralisation. Calculate the percentage of nitrogen in the compound.

The neutralization of 50 ml of 0.25N H_2SO_4 will require ____ ml of 0.50 N NaOH.

3.0 g of a sample of impure ammonium chloride were boiled with excess of caustic soda solution. Ammonia gas so evolved was passed into 120 mL of N/2 H_(2)SO_(4) mL of N/2 NaOH were required to neutralise excess of the acid. Calculate the percent purity of the given sample of ammonium chloride.

A sample of 0.50 g of an organic compound was treated according to Kjeldahl's method. The ammonia evolved was absorbed in 50 mL of 0.5 M H_(2)SO_(4) . The residual acid required 60 mL of 0.5 M solution of NaOH for neutralisation. What would be the percentage composition of nitrogen in the compound?

A 0.5 g sample containing MnO_(2) is treated with HCl liberating Cl_(2) is passed into a solution of KI and 30.0 " mL of " 0.1 M Na_(2)S_(2)O_(3) are required to titrate the liberated iodine. Calculate the percentage of MnO_(2) is the sample.

The pH of a solution obtained by mixing 50 mL of 0.4 N HCl and 50 mL of 0.2 N NaOH is

0.002 gm of an organic compound was treated according to Kjeldahl's method. 0.2xx10^-4 mol of H_2SO_4 was required to neutralise NH_3 . Calculate the percentage of N

150 mL of N/10 HCI are required to react completely with 1.0 g of a sample of lime stone ( CaCO_3 ). Calculate the percentage purity of the sample.

29.5 mg of an organic compound containing nitrogen was digested according to Kjeldahl's method and the evolved ammonia was absorbed in 20mL of 0.1M HCL solution. The excess of the acid required 15 mL of 0.1 M NaOH solution for complete neutralization. The percentage of nitrogen in the compound is:

29.5 mg of an organic compound containing nitrogen was digested according to Kjeldahl's method and the evolved ammonia was absorbed in 20 mL of 0.1 M HCl solution. The excess of the acid required 15 mL of 0.1 M NaOH solution for complete neutralization. The percentage of nitrogen in the compounds is