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acids, bases and salts — Science STD 10 — Question

Gujarat BoardEnglish MediumSTD 10Scienceacids, bases and salts2 Marks
Question
What is meant by basic oxide? What are the types of metal oxide? Give example.
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Answer

  • The oxides which reacts with water to form bases are called basic oxides.
  • Metal oxides are basic as they form a base on the reaction with water.
  • For example,
  • $\mathrm{Na}_2 \mathrm{O}(\mathrm{s})+\mathrm{H}_2 \mathrm{O}(\mathrm{I}) \rightarrow 2 \mathrm{NaOH}(\mathrm{aq})$
Sodium Sodium oxide hydroxide
  • Thus, metal oxides are basic in nature.
  • Examples: $\mathrm{Na}_2 \mathrm{O}, \mathrm{MgO}, \mathrm{CaO}, \mathrm{BaO}$.

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