Organic Families

9.In the addition reaction of ethene with steam, what is the product?

10.State the functional group present in alcohols.

11.Arrange the following alkanes in order of increasing boiling point (lowest first).

12.The diagram shows the structure of ethanol. Name the functional group shown in red.

13.Ethanol can be produced by the hydration of ethene using an acid catalyst.

14.Complete the sentence.

15.How many hydrogen atoms are in a molecule of pentane?

16.Alkanes are unsaturated hydrocarbons.

17.Which of the following are products of the complete combustion of an alkane? (Select all that apply.)

18.A sample of hydrocarbon X is mixed with bromine water and shaken. The bromine water remains orange. Which statement about X is correct?

19.Which of the following are products of the complete combustion of ethanol? (Select all that apply.)

20.In the fractional distillation of petroleum, the fraction with the highest boiling point condenses at the top of the column.

21.Match each alkane to its molecular formula.

22.Arrange the following fractions of petroleum in order of increasing boiling point (lowest first).

23.The hydration of ethene to produce ethanol is an addition reaction. Which conditions are required?

24.Which of the following is the correct general formula for alkenes?

25.A student carries out a cracking experiment using a long-chain alkane. Which piece of apparatus is most suitable to collect the gaseous products?

26.In an experiment to test for unsaturation, a student adds bromine water to two hydrocarbons, X and Y. X decolourises bromine water, Y does not. What can be concluded about X and Y?

27.Which of the following are required for the cracking of long-chain alkanes? (Select all that apply.)

28.In an experiment to investigate the effect of chain length on boiling point, a student measures the boiling points of pentane, hexane, and heptane. Which of the following is the most likely result?

29.What is the general formula of alkanes?

30.Methane is the main constituent of natural gas.

31.Match each fraction of petroleum to its correct use.

32.The table shows the boiling points of four alkanes. Which alkane has the longest carbon chain? | Alkane | Boiling point (°C) | |---|---| | A | -164 | | B | -42 | | C | -0.5 | | D | 36 |

33.Complete combustion of an alkane produces carbon dioxide and water only.

34.How many carbon atoms are in a molecule of pentane?

35.Complete the sentence: In the addition reaction of ethene with steam, the product is ___.

36.A student cracks a sample of decane (C10H22) and collects 0.50 g of ethene (C2H4). Assuming the only reaction is C10H22 → C8H18 + C2H4, what mass of decane was cracked? Give your answer in grams to two decimal places.

37.Complete the sentences about cracking.

38.Calculate the number of hydrogen atoms in a molecule of pentane.

39.Complete the sentence about the test for alkenes.

40.Explain why alkenes are more reactive than alkanes.

41.How many carbon atoms are in a molecule of pentane?

42.A student cracks a sample of decane (C10H22) and collects 0.50 g of ethene (C2H4). Assuming the only reaction is C10H22 → C8H18 + C2H4, what mass of decane was cracked? Give your answer in grams to two decimal places.