Question

Potassium sulphite on reacting with hydrochloric acid release _____ gas.
 $(C{l}_2,S{O}_2,H_{2}S)$

Answer 1

Hint: We know that the when dilute hydrochloric acid reacts with potassium sulfite, sulphur-di-oxide gas is evolved after performing these, and the product is treated with the required aqueous solution of potassium chloride to separate the two parts of the double salt from each other. The Potassium sulfate compound can also be produced synthetically, which can be possible by treating the potassium chloride with raw sulfuric acid.

Complete answer:
Potassium Sulfate can be described as an inorganic chemical compound having the chemical formula $K_{2}S{O}_4.$ It can also be referred to as either dipotassium sulfate or Sulfuric acid dipotassium salt. This compound occurs naturally in salt lakes and volcanic lava. Its appearance is as a colourless white crystalline powder or simply crystals. It is purely odourless and has a hard, saline-like and bitter taste. This compound dissolves in water, but it is insoluble in ethanol.
Dilute hydrochloric acid reacts with potassium sulfate so, we can write the following equation for it:
 $K_{2}S{O}_3+2HCl\to 2KCl+H_{2}O+S{O}_2.$ Potassium sulphite on reacting with hydrochloric acid releases sulphur dioxide $\left(S{O}_2\right)$ gas.
In this case, sulphur-di-oxide gas $\left(S{O}_2\right)$ is evolved in the above reaction with the formation of potassium chloride. It is a colourless gas having the suffocating smell of burning sulphur. It changes freshly prepared acidified potassium dichromate $\left(K{r}_{2}C{r}_2{O}_7\right)$ from orange to green.
Therefore, Potassium sulfate reacts with hydrochloric acid release $S{O}_2$ gas.

Note:
Remember that Sulphur-di-oxide gas is a colourless gas having the suffocating smell of burning sulphur. It irritates the risk of tract infection and causes coughing, mucus secretion and the conditions such as asthma and chronic bronchitis are aggravated. Hydrogen sulphide gas is a colourless gas with a smell of rotten eggs and it can irritate eyes, throat and nose. It is highly flammable explosive gas. It also burns and produces other toxic vapours; also it is heavier than air, so it may settle at low spots.