During a seminar session in the class, the presenter argued that equal

1.	During a seminar session in the class, the presenter argued that equal amounts of both H2and N2 on heating at constant pressure will expand in the same rate. Another student objected this argument by saying that they will expand differently since their molecular masses are different. 1. Who is correct in your opinion? 2. Which law helped you to reach the answer? 3. State the law and give its mathematical expression.
Answer» 1. The argument of the presenter is correct. 2. Charles’ law 3. Charles’ law states that pressure remaining constant, the volume of a fixed mass of a gas is directly proportional to its absolute temperature. Mathematically, V ∝ T (at constant n and P) Or \(\frac{V}{T}\)= K, where K is the proportionality constant which depends on the pressure of the gas, its amount and the unit in which V is expressed.

During a seminar session in the class, the presenter argued that equal amounts of both H2and N2 on heating at constant pressure will expand in the same rate. Another student objected this argument by saying that they will expand differently since their molecular masses are different. 1. Who is correct in your opinion? 2. Which law helped you to reach the answer? 3. State the law and give its mathematical expression.

Answer»

1. The argument of the presenter is correct.

2. Charles’ law

3. Charles’ law states that pressure remaining constant, the volume of a fixed mass of a gas is directly proportional to its absolute temperature.

Mathematically, V ∝ T (at constant n and P) Or \(\frac{V}{T}\)= K, where K is the proportionality constant which depends on the pressure of the gas, its amount and the unit in which V is expressed.

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