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Write balanced chemical equations for the following reactions 

(i) A mixture of potassium dichromate and sodium chloride is heated with concentrated H2SO

(ii) Potassium permanganate is added to a hot solution of manganous sulphate.

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(i) K2Cr2O7 + 4NaCl + 6H2SO 2CrO2Cl2 + 4NaHSO4 + 3H2O + 2KHSO4 

(ii) 2KMnO4 + 3MnSO4 + 2H2 5MnO2 + K2SO4  + 2H2SO4

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