Ethyl chloride, C₂H₅Cl, is used as a local anesthetic. It works by cooling tissue as it vaporizes; its heat of vaporization is 26.4 kJ mol^-1. How much heat could be removed by 20.0 g of ethyl chloride? A) 8.18 kJ B) 341 kJ C) 528 kJ D) 3410 kJ

Question

Quizplus · Accepted Answer

The molar mass of ethyl chloride (C2H5Cl) is approximately 64.5 g/mol. Therefore, 20.0 g corresponds to about 0.31 mol. The heat removed is calculated by multiplying the moles by the heat of vaporization: 0.31 mol * 26.4 kJ/mol = 8.18 kJ.

Ethyl Chloride, C2H5Cl, Is Used as a Local Anesthetic

Ethyl Chloride, C₂H₅Cl, Is Used as a Local Anesthetic