Prior to the discovery that freon-12 (CF 2 Cl 2 ) was harmful to the Earths ozone

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Prior to the discovery that freon-12 (CF2Cl2) was harmful to the Earth’s ozone layer, it was frequently used as the dispersing agent in spray cans for hair spray, etc. Its enthalpy of vaporization at its normal boiling point of −29.2°C is 20.25 kJ mol−1. Estimate the pressure that a can of hair spray using freon-12 had to withstand at 40°C, the temperature of a can that has been standing in sunlight. Assume that ∆vapH is a constant over the temperature range involved and equal to its value at −29.2°C.

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Physical Chemistry

ISBN: 9780716787594

8th Edition

Authors: Peter Atkins, Julio De Paula

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