10 g impure NaOH is completely neutralised by 1000 ml of `(1)/(10)N HCl`. Calculate the percentage purity of the impure NaOH.

An impure sample of (NH_(4))_(2)SO_(4) is supplied to a laboratory. 3.6g of the supplied (NH_(4))_(2)SO_(4) salt on heating with NaOH forms NH_(3) gas. 100 mL of 0.5(N)H_(2)SO_(4) is required for the complete neutralisation of the liberated NH_(3) gas. calculate the percentage purity of the impure sample. let us assume, the impurity of the sample is insoluble in NaOH.

3.0 g of impure Na_2CO_3 is dissolved in water and the solution is made up to 250 mL . To 50 " mL of " this solution, 50 " mL of " 0.1 N HCL is added and the mixture, after shaking well, required 10 " mL of " 0.16 N NaOH solution for cojmplete neutralisation. Calculate the percentage purity of the sample of Na_2CO_3 .

3.0 g of impure Na_2CO_3 is dissolved in water and the solution is made up to 250 mL . To 50 " mL of " this solution, 50 " mL of " 0.1 N HCL is added and the mixture, after shaking well, required 10 " mL of " 0.16 N NaOH solution for cojmplete neutralisation. Calculate the percentage purity of the sample of Na_2CO_3 .

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.

50 gm of sample of sodium hydroxide required for complete neutralisation, 1 litre 1 N HCl. What is the percentage purity of NaOH is

150 mL of N//10 HCl is required to react completely with 1.0 g of a sample of limestone. Calculate the percentage purity of calcium carbonate.