Name the gas which is usually produced when dilute sulphuric acid reacts with a metal. Illustrate it with the help of an example. How will u test the evolution of this gas?

Question

Answer

Answer

When dilute sulphuric acid reacts with a metal hydrogen gas is liberated for example,
H2So4+Zn-->ZnSo4+H2,
to test the presence of hydrogen gas when we bring a burning matchstick near it will produce a Pop sound

Answer

Gas produced when dilute sulphuric acid reacts with metal:

When dilute sulphuric acid reacts with a metal, hydrogen gas is produced. The reaction can be represented as follows:

Metal + Dilute Sulphuric Acid → Salt of the Metal + Hydrogen Gas

For example, when zinc reacts with dilute sulphuric acid, zinc sulphate and hydrogen gas are produced:

Zn + H2SO4 → ZnSO4 + H2

Testing the evolution of hydrogen gas:

To test the evolution of hydrogen gas, the following steps can be followed:

1. Collect the gas: The hydrogen gas evolved during the reaction can be collected by inverting a test tube or a gas jar over the reaction vessel. The gas being lighter than the air rises up and gets collected in the inverted test tube or gas jar.

2. Ignite the gas: The collected gas can be ignited by bringing a burning splint near its mouth. If the gas is hydrogen, it will burn with a pop sound.

3. Confirm the gas: To confirm that the gas collected is indeed hydrogen, a glowing splint test can be performed. A glowing splint can be brought near the mouth of the test tube or gas jar. If the gas is hydrogen, it will burn with a pop sound and the flame of the splint will extinguish.

4. Other tests: Other tests such as the addition of a few drops of bromine water or holding a cold, moist piece of paper near the mouth of the test tube can also be performed to confirm the presence of hydrogen gas.

Answer

Hydrogen gas will be evolve . We can test it when hydrogen gas bubbles rise up then if we bombaded it with a burning candle then it produce a sound like 'pop' which indicates that hydrogen gas is evolving .

Example --- Na + H2SO4 = NaSO4 + H2 .

Answer

Answer

The gas which is usually produced when dilute sulphuric acid reacts with a metal is hydrogen. When this gas is passed through soap solution, soap bubbles are formed containing hydrogen gas and when we bring a burning matchstick near the bubbles, it burns with a pop sound.

Answer

[1]Dilute sulfuric acid reacts with metals via a single displacement reaction as with other typical acids, producing hydrogen gas and salts.

[2]To test for hydrogen gas evolved, insert a lighted splint into the test tube. The lighted splint should extinguish with a characteristic 'pop' sound.

[3]Example----->6HCl(aq)+Fe(s)→2FeCl3(aq)+3H2(g)

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