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Acids, Bases and Salts — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts2 Marks
Question
What happens when zinc granules are heated with sodium hydroxide solution?
Write equation of the reaction which takes place.
✓

Answer

When zinc granules are heated with sodium hydroxide solution, then sodium zincate salt and hydrogen gas are formed.
$2\text{NaOH}\text{(aq)}\ \ +\ \ \text{Zn(s)}\xrightarrow{\text{Heat}}\text{Na}_2\text{ZnO}_2(\text{aq})\ \ +\ \ \text{H}_2\text{(g)}\\^{\text{Sodium Hydroxide}}\ \ \ ^{\text{Carbon dioxide}}\ \ \ \ ^{\text{Calcium carbonate}}\ \ \ \ \ \ \ \ \ ^{\text{Water}}\\\ \ \ \ \ \ \ \ ^{\text{(Base)}}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ^\text{(Salt)}$

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