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While describing the experiment of study...

While describing the experiment of study of properties of HCl and NaOH by their reaction with zinc metal, the teacher told her students that zinc metal shows amphoteric nature. It means that

A

Zn reacts with HCl only

B

Zn reacts with NaOH only

C

Zn reacts with HCl and NaOH both

D

Zn does not react either with HCl and NaOH

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To solve the question regarding the amphoteric nature of zinc metal and its reactions with hydrochloric acid (HCl) and sodium hydroxide (NaOH), we will follow these steps: ### Step-by-Step Solution: 1. **Understanding Amphoteric Nature**: - Amphoteric substances are those that can react with both acids and bases. This means that they can behave as either an acid or a base depending on the reaction conditions. 2. **Identifying the Reactions**: - We need to determine how zinc reacts with HCl and NaOH. - **Reaction with HCl**: - Zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas. - The balanced equation for this reaction is: \[ \text{Zn} + 2\text{HCl} \rightarrow \text{ZnCl}_2 + \text{H}_2 \] - **Reaction with NaOH**: - Zinc also reacts with sodium hydroxide to produce sodium zincate and hydrogen gas. - The balanced equation for this reaction is: \[ \text{Zn} + 2\text{NaOH} \rightarrow \text{Na}_2\text{ZnO}_2 + \text{H}_2 \] 3. **Analyzing the Options**: - Now we will evaluate the provided options based on the reactions we have identified: - **Option 1**: Zinc reacts with HCl only. (Incorrect) - **Option 2**: Zinc reacts with NaOH only. (Incorrect) - **Option 3**: Zinc reacts with HCl and NaOH both. (Correct) - **Option 4**: Zinc does not react either with HCl and NaOH. (Incorrect) 4. **Conclusion**: - Since zinc reacts with both HCl and NaOH, the correct answer is **Option 3**: Zinc reacts with HCl and NaOH both.
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