Name: Reactions of Metal Carbonates with Acids
Uploaded: 2019-07-19
Duration: 4 min 6 s
Description: When substances like metals and liquids like acid react, it produces salt, water, and carbon dioxide. Here, in this video, it has been explained in detail wi...

Question

Give an activity to show the reaction between an active metal and an alkali.

Accepted Answer

The activity to show the reaction between an active metal and an alkali is as follows:

Procedure:
1. Take a few pieces of zinc granules in the test tube.
2. Add $2 ml$ of sodium hydroxide solution to the test tube containing zinc granules.
3. Warm the contents of the test tube.
4. Pass the gas being evolved through the soap solution.
5. Take a burning candle near a gas-filled bubble.
6. Record the observation.

Observation:
Zinc granules react with sodium hydroxide solution to form a salt sodium zincate along with the liberation of hydrogen gas. This gas burns with a pop sound when a burning candle is brought near the gas-filled bubble.
The chemical reaction involved is:
$\underset{Zinc}{Zn (s)} + \underset{\begin{matrix} Sodium \\ hydroxide \end{matrix}}{2 NaOH (aq)} \to \underset{\begin{matrix} Sodium \\ zincate \end{matrix}}{{Na}_{2} {ZnO}_{2} (aq)} + \underset{Hydrogen}{H_{2} (g) ↑}$

Thus, we can conclude that some metals react with alkali to form salt and hydrogen gas.

Give an activity to show the reaction between an active metal and an alkali.

Important Questions on Acids, Bases and Salts

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