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

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

Answer

Correct option: A.
Green $-$ blue solution of copper $\text{(II)}$ chloride.
The dark turquoise-green solid copper $\text{(II)}$ carbonate dissolves in hydrochloric acid to form a green $-$ blue solution of copper $\text{(II)}$ chloride and effervescence from carbon dioxide formed.
$\mathrm{CuCO}_3+2 \mathrm{HCl} \rightarrow \mathrm{CuCl}_2+\mathrm{H}_2 \mathrm{O}+\mathrm{CO}_2$​

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