Chromium plating can involve the electrolysis of an electrolyte of an acidified mixuture of chromic acid and chromium sulphate . If during electrolysis the article being plated increases in mass by 2.6 g and 0.6 dm3 of oxygen are evolved at an inert anode, the oxidation state of chromium ions being discharged must be:(assuming Cr=52) and I mole of gas at room temperature and pressure occupies a volume of 24 dm^3)

Chromium plating can involve the electrolysis of an electrolyte of an

1.	Chromium plating can involve the electrolysis of an electrolyte of an acidified mixuture of chromic acid and chromium sulphate . If during electrolysis the article being plated increases in mass by 2.6 g and 0.6 dm3 of oxygen are evolved at an inert anode, the oxidation state of chromium ions being discharged must be:(assuming Cr=52) and I mole of gas at room temperature and pressure occupies a volume of 24 dm^3)
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