Question

Nitric acid converts iodine into
A. Iodic acid
B. Hydroiodic acid
C. Iodine nitrate
D. Iodine pentoxide

Answer 1

Hint: Nitric acid has the chemical formula of $HN{{O}_{3}}$ . It is a strong acid and a strong oxidising agent. Thus it oxidise iodine.

Complete Step by Step Answer:
Nitric acid reacts with iodine gas to form an acid of iodine that is iodic acid along with a greenhouse gas that is nitrogen dioxide and water as products. The reaction can be given as follows:
${{I}_{2}}+10HN{{O}_{3}}\to 2HI{{O}_{3}}+10N{{O}_{2}}+4{{H}_{2}}O$

Thus in this reaction ten moles of a strong acid that is Nitric acid reacts with one mole of a halogen that is iodine gas to form two moles of an acid of iodine that is iodic acid along with ten moles of a greenhouse gas that is nitrogen dioxide and four moles of water as products. Thus we can write that nitric acid converts iodine gas to iodic acid.
Thus the correct option is A.

Additional Information: The least reactive element among the halogens is Iodine. It is a group $17$ element. It has a large size. It also has least electronegativity among the halogens. It generally exists as a gas at room temperature. It is a violet colored gas. In the presence of starch it gives blue coloration. It has the symbol of $I$.

Note: Nitric acid should be used in small amounts in iodine gas. As it is a strong acid, adding excess nitric acid can destroy the reaction and no product is formed.