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Question

Give balanced chemical equations for the following reactions:
(i) Fluorine is passed through cold, dilute NaOH solution.
(ii) Hydrogen peroxide is treated with acidified KMnO4 solution.
(iii) Sulphuric acid is treated with hydrogen sulphide.

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Solution

(i) 2F2Flourine+2NaOHSodiumhydroxide(coldanddil.)OF2Oxygendiflouride+2NaFSodiumflouride+H2OWater
(ii) KMnO4Potassiumpermanganate(Violet)+5H2O2Hydrogenperoxide+3H2SO4Sulphuricacid2MnSO4Manganesesulphate(colourless)+8H2O+5O2+K2SO4
(iii) 2H2SO4Sulphuricacid+H2SHydrogenSulphide2H2OWater+SO2Sulphurdioxide+H2OSulphur

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