Question

Activity to show that h2 gas is released when metal react with the acid

Answer 1

Answer:

2hcl+ 2na =2nacl + h2

Explanation:

when burning splinter is brought near the gas poping sound is heard

Answer 2

Answer:

Activity to show that Hydrogen gas is released when metal

                             react with the acid

Aim:

To show the reaction of acids with metals.

Required Materials:

• Glass rod
• Candle
• Test tube
• Soap water
• Zinc crystals
• Dilute HCl

Procedure:

• Set the device as shown in the figure which is attached below. Take in a test tube about 20 ml of dilute HCl and add 2 gm of zinc salt.
• On the surface part, we will observe the gas bubbles formation.

• Pass through the soap water the gas being developed.
• In the soap solution that rises into the air, gas-filled bubbles are created.
• Bring a candle which is burning nearer to the gas filled bubbles. It will shows the evolving of hydrogen gas.

The chemical reaction is as follows:

$A c i d+\text {Metal} \rightarrow \text {Salt}+\text {Hydrogen}$