(a) Complete the diagrams to show the energies of the electrons in a carbon atom, a $\text{C}^+$ ion and a $\text{C}^-$ ion. (b) One of the simple molecular allotropes of carbon is buckminsterfullerene, $\text{C}_{60}$. (i) What is the hybridisation of the carbon atoms in $\text{C}_{60}$? (ii) $\text{C}_{60}$ reacts with an excess of hydrogen to form a single product, $\text{C}_{60}\text{H}_x$. Using your answer to (i), suggest a suitable value for $x$. (c) Methylbenzene can…

Chemistry 9701/42 — February/March 2016

Cambridge A-Level · A Level Structured Questions · worked solutions for every part, with the mark scheme

questions

100

marks

120

minutes

Topics Introduction to A Level Organic Chemistry · Nitrogen Compounds · Chemical Energetics · Transition Elements · Hydroxy Compounds · Hydrocarbons · +7 more

Q1Introduction to A Level Organic ChemistryHydrocarbonsFree sample

(a)

Complete the diagrams to show the energies of the electrons in a carbon atom, a $\text{C}^+$ ion and a $\text{C}^-$ ion.

Fig. 1.1

(b)

One of the simple molecular allotropes of carbon is buckminsterfullerene, $\text{C}_{60}$ .

Fig. 1.2

(i)

What is the hybridisation of the carbon atoms in $\text{C}_{60}$ ?

(ii)

$\text{C}_{60}$ reacts with an excess of hydrogen to form a single product, $\text{C}_{60}\text{H}_x$ .

Using your answer to (i), suggest a suitable value for $x$ .

(c)

Methylbenzene can undergo different reactions to form the products shown below.

Fig. 1.3

(i)

Give the reagents and conditions for these two reactions.

reaction 1:

reaction 2:

(ii)

Name the mechanism of reaction 1.

(iii)

Draw the structure of the product obtained if reaction 1 is carried out using an excess of chlorine.

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8 more questions

Q2Chemical Energetics16M
Q3Transition Elements15M
Q4Reaction Kinetics · Equilibria · Introduction to A Level Organic Chemistry11M
Q5Electrochemistry · Transition Elements10M
Q6Group 2 · Chemical Energetics6M
Q7Hydroxy Compounds · Nitrogen Compounds · Analytical Techniques12M
Q8Introduction to A Level Organic Chemistry · Nitrogen Compounds · Carboxylic Acids and Derivatives · Hydroxy Compounds12M
Q9Polymerisation · Nitrogen Compounds10M

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