Question

In the following equation: SO3+H2O ⇔ X, X is ___________ acid.​

Answer 1

In the following equation: $SO3+H2O$→X is  Sulphuric acid.​this process is called CONTACT PROCESS

Explanation:

• Here in contact process  $SO3$ would react to form Sulphuric Acid
• This is the modern method used for the manufacture of Sulphuric Acid.
• In this process sulphur dioxide and oxygen are passed over the catalyst vanadium oxide.
• These two products combine to form sulphur trioxide which in turn combines with a water molecule to form Sulphuric Acid.
• Initially, platinum was used as a catalyst but later on, it was replaced by vanadium oxide.
• This method was used industrially for manufacturing Sulphuric acid.

Answer 2

X is $H_{2}SO_{4}$ or sulphuric acid.

Explanation:

• In the above reaction, Sulphuric acid is formed when sulphur trioxide combines with water.

• A hydrolysis reaction is a name for this type of reaction. Water is utilised to break down the bonds of a chemical in the hydrolysis reaction.

• This process is a part of contact process

            $SO_{3} + H_{2}O = H_{2}SO_{4}$

• Sulphur Trioxide is not directly dissolved in water directly because it produces a high amount of heat.