Question

Write an activity to show that acids liberate hydrogen gas on reacting with metals

Answer 1

Hi there!

♦ Aim : To show the reaction of acids with metals

♦ Apparatus required :

1. Test tube
2. Delivery tube
3. Glass trough
4. Burner
5. Soap water
6. Dil. HCl
7. Zinc granules.

♦ Procedure : Set the apparatus as shown
[ Refer attachment ]

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

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

3. Pass the gas being evolved through the soap water.Gas filled bubbles are formed in the soap solution which rise into the air.

4. Bring a burning candle near the gas filled bubbles.

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

♦ Chemical Eqn. :

$Zn$ + $2HCl$ → $ZnCl_2$ + $H_2$

♦ Conclusion : Only ‘hydrogen’ gas burns making a ‘pop’ sound.

[ Thank you! for asking the question. ]
Hope it helps!

Answer 2

hey dear.

good evening friend.


LET'S TRY


Activity is stated in the given step


(i)Take 5 ml solution of any of acid salt ,let us take sulphuric acid(H2SO4) in a beaker.

(ii)add some zinc granules in it.


(iii)a gas is released.


(iv)This gas is of hydrogen.



HOW CAN U SAY THAT THIS IS HYDROGEN?


try to place a burning candle in the gas,u will hear a pop sound.so,this gas is hydrogen.



HYDROGEN BURNS WITH A POP SOUND.



thanks.