Explain Chromyl Chloride Test with Observation and Inference?
CHROMYL CHLORIDE
TEST
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The mechanism of chromyl chloride test is simple. On reacting potassium dichromate with sulphuric acid, chromate trioxide (oxidation state = +6) is formed. Now salt-containing chloride (NaCl) is reacted with sulphuric acid that gives sodium bisulphate (NaHSO4) and hydrochloric acid (HCl) is also formed.
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The chromyl chloride test entails heating a sample suspected of containing chloride with potassium dichromate and concentrated sulfuric acid. If chloride is present, chromyl chloride is formed and red fumes of CrO2Cl2 are evident
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