Acid radical analysis

Chemistry Level 3

A water soluble salt, when treated with diluted \(\text{H}_{2} \text{SO}_{4}\), gives a colorless gas that turns lime water milky. On passing this gas in excess, the milkyness disappears. On treating the gas with acidic potassium dichromate, the color of potassium dichromate turns green. Find the molecular mass of the anionic part of the salt.

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