Question

The oxidation of both Cu and Zn (both present in a penny) with nitric acid generates complex ions of Cu and Zn in solution. It also produces nitrogen dioxide, a brown, toxic gas. For this reason, where must the dissolving of the penny be carried out?

A) In an open laboratory with good ventilation
B) In a fume hood
C) In a sealed container
D) In a vacuum chamber

Answer 1

The dissolving of the penny with nitric acid must be carried out in a fume hood to ensure safety and prevent the release of toxic gases.

Step-by-step explanation:

The dissolving of the penny with nitric acid must be carried out in a fume hood.

Nitric acid reacts with copper and zinc to produce complex ions of Cu and Zn in solution as well as nitrogen dioxide gas, which is

brown and toxic

. The fume hood provides

good ventilation

and helps to prevent the release of the toxic gas into the surrounding environment, ensuring the safety of the experiment.