Question
Question: Which of the following is a neutral gas? \[A.\] \({O_2}\) \[B.\] \(C{O_2}\) \(C.\) \(S{O_2}\...
Which of the following is a neutral gas?
A. O2
B. CO2
C. SO2
D. All of the above
Solution
Gases can be classified as neutral gases, acidic gases and basic solutions depending on which type of solution they formed when dissolved in a solution. The pH of these solutions are also different as they form different solutions.
Complete step by step answer:
In the given question we have to determine which gas is a neutral gas. Before knowing that we have some idea what basic, neutral and acidic gas. Let's discuss one by one. Alkaline or basic gases are those that form a basic solution, acidic gases form acidic solutions when dissolved in aqueous solution and neutral gases are those gases which form neutral solutions. Out of these gases only Oxygen gas is a neutral gas whereas CO2 and SO2 gases are acidic gas as they form carbonic and sulphurous acid with aqueous solution. The solutions they formed have different pH at constant temperature.
So, the correct option is A.
Additional information:
- Oxygen (O2): Oxygen gas is a colourless, odourless and tasteless gas. Oxygen is very essential to living organisms, being taken up by animals, which convert it to carbon dioxide plants in turn utilize carbon dioxide as a source of carbon and return the oxygen to the atmosphere.
- Sulphur dioxide (SO2): It is a toxic gas responsible for the smell of burnt matches. It is released naturally by volcanic activity and is produced as a by-product of copper extraction and the burning of fossil fuel contaminated with sulfur compounds.
- Carbon dioxide (CO2): Carbon dioxide is a colourless gas. Carbon dioxide molecules consist of a carbon atom covalently double bond to two oxygen atoms. Its occurs naturally in Earth’s atmosphere as a trace of gas
Note:
The basic gases, acidic gases and neutral gases form different solutions have different pH of the solution;
pH of a basic solution is greater than 7.
pH of an acidic solution is less than 7 .
pH of a neutral solution is equal to 7 .