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Write the balanced chemical equations fo...

Write the balanced chemical equations for the following reactions:
(i). A mixture of potassium dichromate and sodium chloride is heated with concentrated `H_2SO_4`.
(ii). Potassium peramanganate is added to a hot solution of manganous sulphate.

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(i). Orange-red vapours of chromyl chloride are formed.
`K_2Cr_2O_7+4NaCl+6H_2SO_4to2CrO_2Cl_2+4NaHSO_4+3H_2O+2KHCO_4`
(ii). Manganese dioxide is formed.
`2KMnO_4+3MnSO_4+2H_2Oto5MnO_2+K_2SO_4+2H_2SO_4`
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