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Acids, Bases and Salts — Science STD 10 — Question

Maharashtra 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

  1. Copper $(II)$ chloride $CuCl_2$
  2. $CuO(s) + 2HCl(aq) \rightarrow CuCl_2(aq) + H_2O(l)$
  3. Copper oxide is basic in nature

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