organic chem exam questions
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• Crude oil heated into fractional distillation column • Column is hot at the bottom and cooler at the top • Liquid (not evaporated) crude oil will stay at the bottom • Gaseous crude oil will rise to the top • Fractions will condense to liquid at their condensing point and separate out at different parts of the column • Different fractions will have different length hydrocarbon chains OR different length hydrocarbons chains will condense at different points • Different fractions will have different properties
• Crude oil heated into fractional distillation column • Column is hot at the bottom and cooler at the top • Liquid (not evaporated) crude oil will stay at the bottom • Gaseous crude oil will rise to the top • Fractions will condense to liquid at their condensing point and separate out at different parts of the column • Different fractions will have different length hydrocarbon chains OR different length hydrocarbons chains will condense at different points • Different fractions will have different properties
Explain the need for cracking
• More long hydrocarbons are produced than needed • High demand for short chain hydrocarbons but not many produced
equation for ammonia
N2 + 3H2 ⇌ 2NH3
e) Describe how to determine the mass of salt that is dissolved in a sample.s
weigh mass of empty evaporating basin add sample evaporate and measure new mass weigh mass of of basin after water has been evaporated and determine difference.