A mixture containing `0.05` mole of `K_2Cr_2O_7 and 0.02` mole of `KMnO_4` was treated with excess of `KI` in acidic madium. The librated iodine required `1.0L` of `NaS_2 O_3` solution for titration. Concentration of `Na_2 S_2 O_3` solution was :

0.5 g mixture of K_(2)Cr_(2)O_(7) and KMnO_(4) was treated with excess of KI in acidic medium. Iodine liberated required 150 cm^(3) of 0.10 N solution of thiosulphate solution for titration. Find the percentage of K_(2)Cr_(2)O_(7) in the mixture :

10 g mixture of K_(2)Cr(2)O_(7) and KMnO_(4) was treated with excess of KI in acidic medium. Iodine liberated 100 cm^(3) of 2.2 N sodium thiosulphate solution for titration. If the mass percent of KMnO_(4) in the mixture Z, then what is the value of 2Z/5 ?

What is the molarity of 0.2N Na_2CO_3 solution ?

What is the action of heat on K_2Cr_2O_7 and KMnO_4 ?

In a iodomeric estimation, the following reactions occur 2Cu^(2+)+4i^(-) to Cu_(2)I_(2)+I_(2), I_(2)+2Na_(2)S_(2)O_(3) to 2NaI+Na_(2)S_(4)O_(6) 0.12 mole of CuSO_(4) was adde to excess of KI solution and the liberated iodine required 120mL of hypo. The molarity of hypo soulution was:

Write reactions of K_2Cr_2O_7 , in acidic medium with H_2S .

Write reactions of K_2Cr_2O_7 , in acidic medium with FeSO_4

A 0.276 g impure sample of copper ore is dissolved and Cu^(2+) is titrated with KI solution. I_(2) liberated required 40 mL of 0.1 M Na_(2) S_(2) O_(3) solution for titration. What is the % of impurities in the ore ?

Na_2S_2O_3 is reduced by I_2 to :

Common name of Na_2 CO_3 . 10H_2O