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| 1. |
The dipole moment of a hydrogen chloride molecule is 3.44 xx 10^(-30) C m, the separation of the dipole is 1.01 xx 10^(-10) m. Estimate the energy liberated in the course of formation of 1 kg of hydrogen chloride from the starting ma terials, if the number of molecules in 1 kg is 1.6 xx 10^(25). |
| Answer» Solution :The ENERGY liberated as the result of the formation of one HYDROGEN chloride molecule is about `U = 10.3 xx 10^(-20) J = 0.65 eV`. Per 1 kg we obtain `E = NU = 1.65 xx 10^(6)` J. (Actually, the energy liberated in the PROCESS of formation of 1 kg of hydrogen chloride is 2.5 MJ, this MEANS that our rough estimate GAVE the right order of magnitude.) | |