Asked in UHS MDCAT 2017 2017Moderate

Chromyl Chloride test is performed to confirm:

Correct answer: A. Chloride ions

  • A. Chloride ions
  • B. Sulfate ions
  • C. Phosphate ions
  • D. Cr3+ ions

Explanation

The chromyl chloride test is used to detect chloride ions in the qualitative analysis. If any chloride salt like sodium chloride is heated with acidified potassium dichromate it produces red colour fumes of chromyl chloride. It confirms the presence of chloride ions in that salt.

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About Reactions of Group I Elements

Group I elements have one valence electron, so their reactivity increases down the group as ionisation energy decreases. Their reactions with water, oxygen, hydrogen and halogens produce hydroxides, oxides, hydrides and halides, while the behaviour of lithium differs from the heavier metals because of its small ionic size.

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