Identify the correct statements from the following: i. Sulphuric acid is manufactured by contact process. ii…
Identify the correct statements from the following:
i. Sulphuric acid is manufactured by contact process.
ii. \(\mathrm{SO}_3\) dissolves in \(\mathrm{H}_2 \mathrm{SO}_4\) to form pyrosulphuric acid.
iii. \(\mathrm{H}_2 \mathrm{SO}_4\) is used in the manufacture of fertilisers such as ammonium sulphate and super phosphate.
iv. In the reaction, \(\mathrm{S}+2 \mathrm{H}_2 \mathrm{SO}_4\) (Conc.)
\(\longrightarrow 3 \mathrm{SO}_2+2 \mathrm{H}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{SO}_4\) is oxidised to \(\mathrm{SO}_2\).
i, ii, iii, iv
i, ii, iv only
i, iii, iv only
i, ii, iii only
Solution
Among the given statements (i), (ii) and (iii) are correct whereas (iv) is incorrect. The correct explanation of (iv) is as follows:
In the reaction,
Here, \(\mathrm{S}\) is getting oxidised to \(\mathrm{SO}_2\).
