`100 mL` of a sample of hard water requires `25.1 mL` of `0.02 N H_(2)SO_(4)` for complete reaction, The hardness of water ( density `1g//mL)` is:

A 200 mL sample of hard water requires 33.0 " mL of " 0.01 M H_2SO_4 for complete neutralisation. 200 " mL of " the same sample was boiled with 15.0 " mL of " 0.1 M NaOH solution, filtered and made up to 200 mL again. This sample now requires 53.6 " mL of " 0.01 M H_2SO_4 . Calculate Mg hardness.

A 200 mL sample of hard water requires 33.0 " mL of " 0.01 M H_2SO_4 for complete neutralisation. 200 " mL of " the same sample was boiled with 15.0 " mL of " 0.1 M NaOH solution, filtered and made up to 200 mL again. This sample now requires 53.6 " mL of " 0.01 M H_2SO_4 . Calculate Mg hardness.

100 mL of a sample of tap water requires 50 mL of N // 50- HCl solution for titration. Calculate the temporary hardness of tap water.

50 ml of water sample requires 10 ml of (M)/(50)HCl for complete neutralization. Calculate hardness of H_(2)O (temporary) in ppm.

50 ml of water sample requires 10 ml of (M)/(50)HCl for complete neutralization. Calculate hardness of H_(2)O (temporary) in ppm.

A mixture of H_(2)SO_(4) and H_(2)C_(2)O_(4) (oxalic acid ) and some inert impurity weighing 3.185 g was dessolved in water and the solution made up to 1litre. 10 mL of this solution required 3 mL of 0.1 N NaOH for complete neutralization. In another experiment 100 mL of the same solution in hot condition required 4 mL of 0.02 M KMnO_(4) solution for complete reaction. The mass % of H_(2)SO_(4) in the mixture was:

A mixture of H_(2)SO_(4) and H_(2)C_(2)O_(4) (oxalic acid ) and some inert impurity weighing 3.185 g was dessolved in water and the solution made up to 1litre. 10 mL of this solution required 3 mL of 0.1 N NaOH for complete neutralization. In another experiment 100 mL of the same solution in hot condition required 4 mL of 0.02 M KMnO_(4) solution for complete reaction. The mass % of H_(2)SO_(4) in the mixture was:

A mixture of H_(2)SO_(4) and H_(2)C_(2)O_(4) (oxalic acid ) and some inert impurity weighing 3.185 g was dessolved in water and the solution made up to 1litre. 10 mL of this solution required 3 mL of 0.1 N NaOH for complete neutralization. In another experiment 100 mL of the same solution in hot condition required 4 mL of 0.02 M KMnO_(4) solution for complete reaction. The mass % of H_(2)SO_(4) in the mixture was: