![]() Ethanol can be produced from sugar cane.ĭraw a ring around the correct answer to complete the sentence. Most petrol used in cars contains about 5% ethanol (C2H5OH). Complete the word equation for the complete combustion of octane. Petrol contains a mixture of compounds, including octane (C8H18). Methane and decane are gases at room temperature (20☌). Methane has the lowest melting point and icosane has the highest boiling point. ![]() ) two correct statements about the four compounds. The table below shows four of these compounds. This question is about compounds produced from crude oil. (i)Ĭomplete the equation below to show formation of the polymer from the monomer propene. Small molecules of substances called monomers can be joined together in polymerisation, eg. (2)Ī molecule of the compound methane, CH4, can be shown like this:ĭraw a molecule of the compound ethene, C2H4. This type of reaction is carried out because there is a greater demand for the products than for the original hydrocarbon. This is one of the reactions which took place: C16H34 The hydrocarbon C16H34 was heated strongly in the absence of air. What is the name of the process in which X is changed into poly(ethene)?. ![]() The hydrocarbon X is used to make poly(ethene). The high demand for petrol (octane) can be met by breaking down longer hydrocarbons, such as decane, by a process known as cracking.Īpart from heat, what is used to make the rate of this reaction faster?. Alkanes, alkenes, alcohols, cracking and polymers
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