14.1. Alkanes
A subsection of Chemistry, 9701, through 14. Hydrocarbons
Listing 10 of 122 questions
Crude oil is a mixture of hydrocarbons and provides many useful chemicals when processed. Two of the stages involved in the processing of crude oil are fractional distillation and cracking. The diagram is a simplified representation of a fractional distillation column. crude oil in fraction A fraction B fraction C fraction D fraction E fraction F What has to be done to the crude oil before it enters the column? What trend in structure is there from fraction A to fraction F? State the trends in two properties of the fractions from A to F. The naphtha fraction from fractional distillation of crude oil is used as a starting material for cracking. Write an equation for the cracking of C12H26 to form the products ethene and one other hydrocarbon in a 2 : 1mole ratio. Suggest a use for each of the products from your equation in . Explain what makes each product from suitable for the use you suggest. use of ethene explanation use of other product explanation Burning hydrocarbons can cause a number of environmental problems. The products of internal combustion engines can include oxides of nitrogen and oxides of carbon. Sulfur dioxide is a by-product of burning coal in power stations. Explain how and why oxides of nitrogen are produced in internal combustion engines. Write an equation for the reaction between nitrogen monoxide and carbon monoxide in a catalytic converter. Write equations to show the involvement of nitrogen monoxide in the formation of acid rain from atmospheric sulfur dioxide. Describe two of the problems associated with acid rain.
9701_s16_qp_23
THEORY
2016
Paper 2, Variant 3
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Questions Discovered
122