Question

Which of the following is an acidic oxide?

Answer 1

The chemical compound which has one or more oxygen atoms combined with another element are known as oxides. When oxides get combined with water and give out acid are acidic oxides. Basically, non-metals which react with oxygen form acidic oxides.

Complete step by step answer:
To find out which one is acidic oxide, let us consider every option.
${H_2}O$ is a neutral stable molecule and it is very difficult to break the $O - H$ covalent bond. Only through electrolysis process oxygen can be obtained. Thus, ${H_2}O$ cannot be acidic oxide.
A triple covalent bond is present in $CO$, hence carbon cannot be ionized and that is why it does not react with acid or base. Thus, $CO$ is not acidic oxide.
Similarly, $NO$is a neutral oxide.
To know if $S{O_2}$ is acidic oxide, let’s react it with water
$S{O_2} + {H_2}O \to {H_2}S{O_4}$
And as we know ${H_2}S{O_4}$ is a strong acid. Thus, $S{O_2}$ is an acidic oxide.

So, the correct answer is Option D.

Note: Sulphuric acid is a colourless, heavy, poisonous inorganic compound. It is used to manufacture sulphuric acid, sulfur dioxide, sulfur trioxide, sulphites. It is mainly used as disinfectants, reducing agent, food preservative for dried fruits and as a refrigerant.