The refractive index of pure cyclohexane is 1.4264 - id142641496713928731 от heroicblad 23.05.2020 13:21

Question

Chemistry: The refractive index of pure cyclohexane is 1.4264 and that of pure toluene is 1.4967. During the distillation three fractions were collected. In each case the middle fraction was discarded. For the simple distillation the refractive index of the first fraction is 1.4475 and that of the final fraction is 1.4891. For the fractional distillation the refractive index of the first fraction is 1.4302 and that of the final fraction is 1.4938. Use this data to calculate the percent composition of the four

heroicblad · Accepted Answer

mass of water is 7.43 g Explanation:q = mc∆Tqsteam = 100 g × 1.864 J/(g °C) × (110 – 100) °C = 1864 Jqwater = mwater× 4.184 J/(g °C) × (95 – 35) °C = mwater× 251.04 J/g = qsteam = 1864 Jmwater = 1864 J / 251.04 J/g = 7.43 g...

The refractive index of pure cyclohexane is 1.4264 and that of pure toluene is 1.4967.

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