Ethyl chloride,C₂H₅Cl,is used as a local anesthetic.It works by cooling tissue as it vaporizes.The heat of vaporization is 26.4 kJ/mol.How much heat could be removed by 10.0 g of ethyl chloride?

Question

Quizplus · Accepted Answer

The molar mass of ethyl chloride (C2H5Cl) is approximately 64.5 g/mol. For 10.0 g, the number of moles is 10.0 g / 64.5 g/mol = 0.155 moles. The heat removed is 0.155 moles * 26.4 kJ/mol = 4.09 kJ.

Ethyl Chloride,C2H5Cl,is Used as a Local Anesthetic

Ethyl Chloride,C₂H₅Cl,is Used as a Local Anesthetic