What happens to the density of a gas if its temperature is increased at constant

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Question: What happens to the density of a gas if its temperature is increased at constant pressure?

Options:

Correct Answer: Density decreases

Solution:

According to the ideal gas law, if temperature increases at constant pressure, volume increases, leading to a decrease in density.

What happens to the density of a gas if its temperature is increased at constant pressure?

What happens to the density of a gas if its temperature is increased at constant pressure?

Step 1: Understand that density is the mass of a substance divided by its volume (Density = Mass/Volume).
Step 2: Know that the ideal gas law states that for a gas at constant pressure, if the temperature increases, the volume of the gas must also increase.
Step 3: Since the mass of the gas remains constant, when the volume increases and the mass stays the same, the density must decrease.
Step 4: Conclude that if the temperature of a gas increases at constant pressure, its density decreases.

Ideal Gas Law – The relationship between pressure, volume, temperature, and the number of moles of a gas, expressed as PV = nRT.
Density and Volume Relationship – Density is defined as mass per unit volume; if volume increases while mass remains constant, density decreases.