Question

Sulphuric acid reacts with $PC{l_5}$ to give:
A.Thionyl chloride
B.Sulphur monochloride
C.Sulphur chloride
D.Sulphur ultra chloride

Answer 1

Hint:This question gives the knowledge that the sulphuric acid is an oxidizing agent which itself gets oxidized and reduces the other molecule. Oxidizing agents are the agents which itself get oxidized and reduce the other molecule.

Complete answer:
The sulphuric acid is an oxidizing agent which itself gets oxidized and reduces the other molecule. The molecular formula of sulphuric acid is ${H_2}S{O_4}$. The other name for sulphuric acid is oil of vitriol.
The sulphuric acid is an oxidizing agent which itself gets oxidized and reduces the other molecule. When sulphuric acid reacts with phosphorus pentachloride leads to the formation of sulphur chloride, hydrochloric acid and phosphoryl chloride.
${H_2}S{O_4} + 2PC{l_5} \to S{O_2}C{l_2} + 2POC{l_3} + 2HCl$

Therefore, option $C$ is the correct option.

Additional information: Properties of sulphuric acid are as follows:
$1$. Sulphuric acid is the mineral acid which comprises oxygen, hydrogen and sulphur.
$2$. Sulphuric acid generally synthesizes exothermic reactions very readily.
$3$. It is a colorless liquid which does not possess any odor and is a very viscous liquid which is generally soluble in water.
$4$. The sulphuric acid is highly acidic in nature and acts as a strong acid.
$5$. It possesses both the properties of dehydrating agent and the oxidizing agent.
$6$. Sulphuric acid is hygroscopic in nature as it absorbs water vapor from the air very easily.
$7$. Sulphuric acid is produced by various methods such as wet sulphuric acid process, contact process, lead chamber process and so forth.
$8$. Sulphuric acid is very useful in the manufacturing of fertilizers.

Note:
Always remember that the sulphuric acid is an oxidizing agent which itself gets oxidized and reduces the other molecule. Sulphuric acid generally synthesizes exothermic reactions very readily. The sulphuric acid is highly acidic in nature and acts as a strong acid.