Question

please answer questions ​

Answer 1

Explanation:

Question -

The electrolytic decomposition of water gives H2 and O2 in the ratio of

a) 1:2 by volume

b) 2:1 by volume ✔

c) 2:1 by mass

d) 1:2 by mass

Additional information :-

Chemical equation -

• 2H2O --> 2H2 + O2
• Electrolysis of water produces 2 volume of hydrogen gas and 1 volume of oxygen gas.
• In other words, electrolysis of water shows that water is a compound made up of 2 parts of hydrogen and 1 part of oxygen (by volume).

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.