Question

In an experiment, metal X is heated in steam. A colorless gas is evolved. Identify the metal and the gas evolved. Write a chemical reaction involved. ​

Answer 1

Given:

In an experiment, metal X is heated in steam. A colorless gas is evolved.

To find:

• Identify the metal and gas

• Balanced chemical equation.

Solution:

The metal X is Magnesium.

This is because magnesium slowly reacts with water vapour in steam to produce magnesium hydroxide along with liberation of hydrogen gas.

So , the evolved gas is Hydrogen.

The required chemical equation:

$\boxed{\sf{Mg+H_{2}O(g) \rightarrow Mg(OH)_{2}+H_{2}(\uparrow)}}$

The same reaction is also possible with

• Zinc

• Iron

$\boxed{\sf{Zn+H_{2}O(g) \rightarrow Zn(OH)_{2}+H_{2}(\uparrow)}}$

$\boxed{\sf{Fe+H_{2}O(g) \rightarrow Fe_{3}O_{4}+H_{2}(\uparrow)}}$

Answer 2

Answer:

Zinc

Explanation:

Metals like zinc, iron, magnesium react with steam to liberate hydrogen which is actually a colorless gas. To test this gas, check if the gas ignites with a squeaky pop sound

The chemical reaction between zinc and steam can be written as;

zinc + steam == zinc oxide + hydrogen

This is a slow reaction, to fasten up the reaction we can use heated zinc with steam. This will make reaction faster