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Organic Chemistry: Some Basic Principles and Techniques — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryOrganic Chemistry: Some Basic Principles and Techniques1 Mark
MCQ
The dark turquoise-green solid copper (II) carbonate dissolves in hydrochloric acid to form a:
  • A
    Green-blue solution of copper (II) chloride.
  • B
    Red solution of copper (II) chloride.
  • C
    Green-blue solution of copper (II) chlorinate.
  • D
    Green-blue solution of carbon dioxide.
✓

Answer

  1. Green-blue solution of copper (II) chloride.

Explanation:

The dark turquoise-green solid copper (II) carbonate dissolves in hydrochloric acid to form a green-blue solution of copper (II) chloride and effervescence from carbon dioxide formed.

CuCO3 ​+ 2HCl → CuCl2 ​+ H2​O + CO2​

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