Question

In Which of the following reaction (s) H2So4 does not act as acid as well as an oxidant?

Answer 1

Answer:

in double decomposition reaction

it does not act as acid as well as an oxidant

Answer 2

Answer: The answer will be :

1. $CaF_{2} + H_{2}SO_{4}$ ⇒ $CaSO_{4} + 2HF$
2. Pb, Nobel gases

Explanation:

• Sulphuric acid

Sulphuric acid is a widely used acid in the chemical industry. It forms hydronium ion when dissolved in water just like other acids. It is also known as oil of vitriol and the King of chemicals because there is no other manufactured compound which is used widely in a large number of key industries.

• Manufacture of Sulphuric acid

The manufacturing process of sulphuric acid is called the Contact process.

In this process, sulphuric acid is produced on a large scale through machines. The chemical used are :

1. Sulphur
2. Sulphur dioxide
3. Sulphur trioxide
4. Vanadium pent-oxide
5. Water

• Acidic nature

Sulphuric acid is a volatile as well as strong acid depending upon its concentration in water.

Example:

$2 NaOH+H_{2}SO_{4}$ ⇒ $NaSO_{4} + 2H_{2}O$

• Oxidizing agent

Sulphuric acid is a very strong oxidizing agent due to its high affinity for oxygen. When sulphuric acid works as an oxidizing agent in a reaction, it itself undergoes reduction.

Example :

$S + H_{2}SO_{4}$ ⇒ $3SO_{2}+ 2H_{2}O$

• When Sulphuric acid does not works as an oxidizing agent ?

The meaning of oxidation is not only the addition of oxygen or any electronegative element, but it also means loss of electrons as well.

Example:

$CaF_{2} + H_{2}SO_{4}$ ⇒ $CaSO_{4} + 2HF$

In this reaction, the oxidation state of every atom remains unchanged. Hence, in this reaction sulphuric acid does not reacts as an oxidizing agent.

• When sulphuric acid does not works as an acid ?

Sulphuric acid being a strong as well as a volatile acid does not acts as an acid when it reacts with noble gases and lead. With these elements the reaction will not even proceed.

#SPJ3