Question

When zinc reacts with sodium hydroxide the products formed are​

Answer 1

Answer:

Zinc reacts with NaOH to form sodium zincate with the evolution of hydrogen gas.

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Answer 2

Answer:

The products formed from the reaction of zinc with sodium hydroxide are hydrogen gas and a compound of zinc and sodium known as sodium zincate .

Explanation:

The reaction of zinc with sodium hydroxide is single displacement reaction.

When bases react with some metals like Zn and Al produce hydrogen gas. Since the reactivity of zinc is lower than that of sodium according to electrochemical series. So, when zinc reacts with aqueous sodium hydroxide, it follows equation:

Zn  +  2NaOH   $\longrightarrow$  2Na₂ZnO₂  +  H₂

• The reaction of Zinc with aqueous sodium hydroxide produces sodium zincate and hydrogen gas.
• This reaction occurs at a temperature of 550∘C.
• Formation of this compound is possible because Zn is able to displace hydrogen from both acids and bases. Therefore, Zinc is called an Amphoteric metal.

To learn more about "Decomposition reaction"

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To learn more about "Displacement reaction"

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