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Acids, Bases and Salts — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts3 Marks
Question
On adding dilute hydrochloric acid to copper oxide powder, the solution formed is blue-green.
  1. Predict the new compound formed which imparts a blue-green colour to solution.
  2. Write a balanced chemical equation of the reaction which takes place.
  3. On the basis of the above reaction, what can you say about the nature of copper oxide?
✓

Answer

a. Copper (II) chloride $CuCl _2$
b. $CuO ( s )+2 HCl ( aq ) \rightarrow CuCl _2( aq )+ H _2 O$ (I)
c. Copper oxide is basic in nature

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