20 mL of a solution of sulphuric acid neutrlise 21.2 mL of 30 % solution of sodium carbonate. How much water should be added to 100 mL of this solution to bring down its strength to decinormal ?

20 mL of a solution os sulphuric acid neuitralise 21.2 mL of 30% soution of sodium carbonete. How much water should be added to 100 mL of this solutio to bring down its down its strength to decinoral?

20 mL of a solution of H_2SO_4 neutralises 21.2 mL of 30% solution (w/v) of Na_2CO_3 . How much water should be added to each 100 mL of the solution to bring down its strength to decinormal ?

How much pure alcohol be added to 400 ml of a 15% solution to make its strength 32%?

How much pure alcohol be added to 400 ml of a 15% solution to make its strength 32%?

How much water should be added to 500 mL of N/2 NaOH solution to obtain a decinormal solution?

How much water should be added to 100 ml of 1MH_(2)SO_(4) solution to make it exactly 0.1 N ?

1.325 g of anhydrous sodium carbonate are dissolved in water and the solution made up to 250 mL. On titration, 25 mL of this solution neutralise 20 mL of a solution of sulphuric acid. How much water should be added to 450 mL of this acid solution to make it exactly N/12 ?

How much water should be added to '300 mL' of 0.5 M NaOH solution so as fo prepare a solution of 0.2 M?