Home
Class 11
CHEMISTRY
0.80 g of sample of impure potassium dic...

`0.80 g` of sample of impure potassium dichromate was dissolved in water and made up to `500 mL` solution. `25 mL` of this solution treated with excess of `KI` in acidic medium and `I_(2)` liberated required `24 mL` of a sodium thiosulphate solution. `30 mL` of this sodium thiosulphate solution required `15 mL` of `N//20` solution of pure potassium dichromate. What was the percentage of `K_(2)Cr_(2)O_(7)` in given sample?

Promotional Banner

Similar Questions

Explore conceptually related problems

25 ml of H_(2)O_(2) solution was added to excess of acidified Kl solution. The iodine so liberated required 20 ml. of 1 N sodium thiosulphate solution. What is volume strength of H_(2)O_(2)

Calculate the percentage of available chlorine in a sample of 3.55g of bleaching powder which was dissolved in 100mL of water. 25mL of this solution, on treatment with KI and dilute acid, required 20 mL of 0.125 N sodium thiosulphate solution.

Calculate the percentage of available chlorine in a sample of 3.55g of bleaching powder which was dissolved in 100mL of water. 25mL of this solution, on treatment with KI and dilute acid, required 20 mL of 0.125 N sodium thiosulphate solution.

To a 25 ml H_(2)O_(2) solution, excess of acidified solution of potassium iodide was added. The iodine liberated required 20 ml of 0.3 N sodium thiosulphate solution. The volume strength of H_(2)O_(2) solution is

To a 25 ml H_(2)O_(2) solution, excess of acidified solution of potassium iodide was added. The iodine liberated required 20 ml of 0.3 N sodium thiosulphate solution. The volume strength of H_(2)O_(2) solution is

To a 25 ml H_2O_2 solution, excess of acidified solution of potassium iodide was added. The iodine liberated required 20 mL of 0.3 N sodium thiosulphate solution. Calculate the volume strength of H_2O_2 solution.