Which of the following temperatures would most likely increase the rate of diffusion of a gas?

• A. -10 °C
• B. 25 °C
• C. 0 °C
• D. 50 °C

Answer: (D)

Verified step by step guidance

1. Understand that the rate of diffusion of a gas is related to the average kinetic energy of its molecules, which increases with temperature.
2. Recall that temperature in Celsius can be converted to Kelvin by adding 273.15, since the Kelvin scale is directly proportional to kinetic energy.
3. Convert each given temperature to Kelvin: for example, \(T(K) = T(^\circ C) + 273.15\).
4. Recognize that higher temperature (in Kelvin) means higher average molecular speed, which leads to a faster rate of diffusion.
5. Compare the temperatures and identify that 50 °C corresponds to the highest Kelvin temperature, thus it would most likely increase the rate of diffusion the most.