The standard enthalpy of physical adsorption typically falls within the low range of . This magnitude of heat release is physically most comparable to the heat of which of the following standard phase

Question

The standard enthalpy of physical adsorption typically falls within the low range of $20	ext{ to }40	ext{ kJ mol}^{-1}$. This magnitude of heat release is physically most comparable to the heat of which of the following standard phase transitions?

Prashant Kotian · Accepted Answer

Correct answer: C. Physical adsorption relies on intermolecular van der Waals forces, which are the exact same types of forces responsible for the condensation of gases into liquids. Therefore, physical adsorption only occurs significantly near the liquefaction temperature of the gas, and its enthalpy () is on the same order of magnitude as the heat of liquefaction (vaporization).

💡 Solution & Explanation

Practice 22,000+ questions like this