Heat of Boron Trifluoride–Methanol System Determined by Bunsen Ice Calorimeter

Abstract

The complex heat of BF₃ with methanol was measured by utilizing the principle of the Bunsen ice calorimeter. The complex heat of BF₃–methanol was found to be 49.2 and 58.1 kJ/mol when the molar ratio of BF₃ to methanol was 1:2 and 1:1, respectively. In addition, the complex heat of BF₃–anisole was also measured to test the apparatus error. The BF₃–anisole result showed a calorimeter value of 53.1 kJ/mol with a system error of 2.3% as compared with the value reported in the literature. The mechanism of the reaction of BF₃ and methanol was interpreted based on our obtained results. This apparatus is useful and suitable for measuring the heat of other liquid–gas and liquid–liquid reactions.

Keywords

Heat of reaction / BF₃–methanol / BF₃–anisole / Bunsen ice calorimeter / Gas–liquid system measurement apparatus

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