An orange coloured compound 'A' of chromium when heated with NaCl in
presence of conc. H,SO, gives red vapours of compound 'B'. Identify the
compounds 'A' and 'B' and write chemical equations involved.
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Answer: Potassium dichromate is warmed with nacl in nearness of h2so4 to give Chromyl chloride,potassium bisulphate and sodium bisulphate.
K2Cr2O7 + 4NaCl + 6H2SO4 → 2CrO2Cl2 + 2KHSO4 + 4NaHSO4 +3H2O
Explanation:
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