0.5g of sample of sulphite salt was dissolved in 200ml solution and 20ml of this solution required 10ml of 0.02M acidified permanganate solution. Hence the % by mass of sulphite in the sulphite salt is
A) 20%
B) 40%
C) 60%
D) 80%

10 g of oxalate was dissolved in 300 mL of solution. This solution required 250 mL of (M/10)KMnO_(4) in acidic medium for complete oxidation. The percentage purity of oxalate ion in the salt is :

40g of salt are dissolved in 120g of solution. Calculate the mass percentage of solution.

7.5 g of an acid are dissolved per litre of the solution. 20 mL of this acid solution required 25 mL of N//15 NaOH solution for complete neutralization. Calculate the equivalent mass of the acid.

1.17 g an impure sample of oxalic acid dihydrate was dissolved and make up of 200 ml with water. 10 ml of this solution in acidic medium required 8.5 ml of a solution of potassium permanganate containing 3.16 g per litre of solution. The percentage purity of oxalic acid will be:

1.5 g of chalk was treated with 10 " mL of " 4 N HCl. The chalk was dissolved and the solution was made to 100 mL. 25 " mL of " this solution required 18.75 " mL of " 0.2 N NaOH solution for comjplete neutralisation. Calculate the percentage of pure CaCO_3 in the sample of chalk.

40g of salt is present in 200g of solution. Calculate the mass percentage of the solution.

Volume of 0.1 M H_2SO_4 solution required to neutralize 20 ml of 0.2 M NaOH solution is :

If 11g of oxalic acid are dissolved in 500 mL of solution (density= 1.1 g mL ^ (−1) ), what is the mass % of oxalic acid in solution?

20g of salt is present in 100g of solution. Calculate the mass percentage of the solution.

200 ml of water is added of 500 ml of 0.2 M solution. What is the molarity of this diluted solution?