Question

During the electrolysis of water, the amount of gas ‘X’ collected in one of the test tubes is double the amount of the other gas ‘Y’.
1. Name X and Y.
2. Why is the amount of X double to that of Y?
3. Write a balanced chemical equation for this reaction.
4. Name the type of reaction.

Answer 1

Explanation:

1) Name X and Y

Answer -

X is hydrogen

And

Y is oxygen

2) Why is amount of X double to that of Y ?

Answer -

This is because the formula of water is H2O, and electrolysis of water produces 2 volume of hydrogen gas and 1 volume oxygen gas.

3) Write a balanced chemical equation for this reaction.

Answer -

When electric current is passed through acidified water, it decomposes to give hydrogen gas and oxygen gas.

Chemical equation :-

2H2O --Electrolysis--> 2H2 + O2

4) Name the type of reaction.

Answer -

This is the type of decomposition reaction.

Additional information :-

Types of chemical reaction :-

• Combination reaction -

Those reaction in which two or more substances combined to form a single substance, are called combination reaction.

• Decomposition reaction -

Those reaction in which a compound splits up into two or more simpler substances are known as decomposition reaction.

• Displacement reaction -

Those reaction in which one element takes the place of another element in a compound, are known as Displacement reaction.

• Double Displacement reaction -

Those reaction in which two compounds react by an exchange of ions to form two new compounds are called double displacement reaction.

Answer 2

Answer:

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