Iron sulphide is heated in air to form $\mathrm{A}$, an oxide of sulphur. A is dissolved in water to give an acid. The basicity of this acid is

Question

Aicharya · Accepted Answer

$$
\begin{array}{l}
4 \mathrm{FeS}+7 \mathrm{O}_{2} ightarrow 2 \mathrm{Fe}_{2} \mathrm{O}_{3}+4 \mathrm{SO}_{2} \\
\mathrm{SO}_{2}+\mathrm{H}_{2} \mathrm{O} ightarrow \mathrm{H}_{2} \mathrm{SO}_{3} ightleftharpoons 2 \mathrm{H}^{+}+\mathrm{SO}_{3}^{2-}
\end{array}
$$
It is dibasic *

Iron sulphide is heated in air to form $\mathrm{A}$, an oxide of sulphur. A is dissolved in water to give an…

Solution