How is `K_(2)Cr_(2)O_(7)` manufactured from chromite ore.

By passing Na_2SO_(3) to the solution of K_(2)Cr_(2)O_(7) , it turns green due to the formation of

(a) Give reasons for the following observations: (i) Cu^(+) ion is not stable in aqueous solution. (ii) Mn (II) ion shows maximum paramagnetic character amongst the bivalent ions of first transition series. (iii) Scandium (At. no. 21) salts are white. (b) Describe the reactions involved in the preparation of K_2Cr_2O_7 from chromite ore.

In Cr_(2)O_(7)^(2-) :

Explain the manufacture of Potassium dichromate from chromite ore.

Describe the manufacture of potassium dichromate from chromite ore.

Describe the manufacture of potassium dichromate from chromite ore.

Write the balanced equations in the manufacture of potassium dichromate from chromite ore.

Write the balanced equations in the manufacture of potassium dichromate from chromite ore.

How many moles of acidified K_(2)Cr_(2)O_(7) is required to liberate 6 moles of I_(2) from an aqueous solution of I^(-) ?