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Write the equations involved in the prep...

Write the equations involved in the preparation of potassium dichromate from chromite ore.

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Describe the manufacture of potassium dichromate from chromite ore.

(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.