Which of the following options best describes the Ideal Gas Law?

Correct option is A

The Correct Answer is: (a) The pressure (P), volume (V) and temperature (T) of a fixed quantity of gas are related by the equation PV/T = Constant

Explanation:
The Ideal Gas Law is expressed as PV = nRT, where:

• P = Pressure

• V = Volume

• n = number of moles of gas

• R = Universal gas constant

• T = Temperature in Kelvin

This law describes the relationship between pressure, volume, and temperature of an ideal gas. It implies that for a fixed amount of gas (n constant), the product of pressure and volume is directly proportional to temperature.

Information Booster:
• Ideal Gas Law combines Boyle’s Law, Charles’s Law, and Avogadro’s Law.
• It is applicable only under ideal conditions (low pressure and high temperature).
• R (Universal Gas Constant) = 8.314 J/mol·K.
• Real gases deviate from ideal behavior under high pressure and low temperature.
• It assumes that gas molecules have no intermolecular forces and occupy no volume.
• Commonly used to calculate gas behavior in chemical reactions and engineering.

Additional Information:
•  The pressure of a gas is directly proportional to its volume at constant volume – Incorrect; pressure and volume are inversely proportional (Boyle’s Law).
•  The volume of a gas is inversely proportional to its temperature at constant pressure – Incorrect; volume is directly proportional to temperature (Charles’s Law).
•  The total pressure of a mixture of gases is equal to the sum of the partial pressures of the individual gases – This describes Dalton’s Law of Partial Pressures, not the Ideal Gas Law.