An alcogas mixture made up of 85% gasoline and 15% ethanol is used as fuel for an engine in the presence of 17.05 m3 air / kg alcogas supplied essentially dry at 30°C and 740 mmHg. 80% of the C burns to CO2, the rest to CO; molal ratio of H2 to CO is 1:2. Assume that gasoline has the same composition as a mixture of iso-octane-heptane with 95% octane number. Use a density of 0.6918 g/mL for iso-octane and 0.684 g/mL for n-heptane. Calculate: a) Orsat analysis of the exhaust gas (Ans. 8.18% CO2, 2.04% CO, 1.02% H2) b) % excess air (Ans. 36.15%

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Distillation

Distillation is a process/technique to separate more volatile components from less volatile components using the principle of relative volatility. In chemical engineering, distillation is one of the most common and important topics that is involved in almost every industry and process.