Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of
Copper metal dissolves in concentrated trioxonitrate (v) acid with the resultant evolution of
- A) CO2
- B) SO2
- C) NO2
- D) CO
Correct Answer: C) NO2
Explanation
When copper metal is added to concentrated trioxonitrate (v) acid, it dissolves and releases a gas. The question is asking which gas is released. The options are CO2, SO2, NO2 and CO.
CO2 is carbon dioxide, which is a gas formed from carbon and oxygen. SO2 is sulfur dioxide, which is a gas formed from sulfur and oxygen. CO is carbon monoxide, which is a gas formed from carbon and oxygen.
The correct answer is option C, NO2, which is nitrogen dioxide. Nitrogen dioxide is a reddish-brown gas that is formed when nitrogen and oxygen react at high temperatures, and it is released when copper metal dissolves in concentrated trioxonitrate (v) acid.
It is important for students to understand the properties of acids and bases, how they react with metals, and the gases that are produced when some metals react with acids. This knowledge is important in understanding the chemical reactions that occur in the environment and in industrial processes.
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