0.02M `K_2Cr_2O_7` is treated with 0.288 g of ferrous oxalate. How much volume of `K_2Cr_2O_7` is required ?

State any four uses of K_2Cr_2O_7 .

20mL of H_2O_2 is reacted completely with acidified K_2Cr_2O_7 solution. 40mL of K_2Cr_2O_7 solution is required to oxidise the H_2O_2 completely. Also, 2.0mL of the same K_2Cr_2O_7 solution is required to oxidise 5.0mL of a 1.0MH_2C_2O_4 solution to reach equivalence point. Which of the following statements is // are correct?

What happens when : (i) Acidified K_2Cr_2O_7 reacts with Kl. (ii) K_2Cr_2O_7 is heated with NaCl in presence of conc. H_2SO_4 . (iii) K_2Cr_2O_7 is heated.

K_2Cr_2O_7 on reaction with H_2O_2 in acidic medium gives

Thermal decomposition of K_2Cr_2O_7 produces:

K_(2)Cr_(2)O_(7) on heating with aqueous NaOH gives

Find the oxidation number of: Cr in K_(2)Cr_(2)O_(7)

A solution of K_2Cr_2O_7 containing 4.9gL^(-1) is used to titrate H_2O_2 solution containing 3.4gL^(-1) in acidic medium. What volume of K_2Cr_2O_7 will be required to react with 20 " mL of " H_2O_2 solution? Also calculate the strength of H_2O_2 in terms of available oxygen.

What volume of 0.2 M K_2Cr_2O_7 is required to oxidise 50 " mL of " 0.3 M Na_2C_2O_4 in acidic medium?

How many ml of 0.3M K_2 Cr_2 O_7 (acidic) is required for complete oxidation of 5 ml of 0.2 M SnC_2 O_4 solution.