Question

Write an activity to show that metals react with acids

Answer 1

Answer:

Zn reacts with HCl to give Zncl2

Answer 2

Answer:

Aim : To show the reaction of acids with metals.

Required Materials :

1. Test tube

2. Delivery tube

3. Glass trough

4. candle

5. Soap water

6. Dil. HCl

7. Zinc granules.

Procedure :

• Set the apparatus as shown in figure.

• Take about 10 ml of dilute HCl in a test tube and add a few zinc granules to it.

• We will observe the formation of gas bubbles on the surface of zinc granules.

• Pass the gas being evolved through the soap water.

• Gas filled bubbles are formed in the soap solution which rise into the air.

• Bring a burning candle near the gas filled bubbles.

• The gas present in a soap bubble burns with a ‘pop’ sound.

Result:

Only ‘hydrogen’ gas burns making a ‘pop’ sound.

So we will notice that gas evolved is { H }_{ 2 }.

Additional Experiment:

Repeat the above experiment with H_{2}SO_{4} and HN{{O}_{3}}.

We observe the same observation of the HCl experiment.

Conclusion : From the above activities we can conclude that when acid reacts with metal, ${ H }_{ 2 }$gas is evolved.