Theory

CH23 - ORGANIC SYNTHESIS

(a) M reacts to form R by the addition of one reagent, as shown in Fig. 5.1.Identify the reagent and conditions for this reaction.(b) R is also made f...

2024 Summer

2

Theory

CH23 - ORGANIC SYNTHESIS

Potassium iodide, KI, is used as a reagent in both inorganic and organic chemistry.(a) KI forms an ionic lattice that is soluble in water.(i) Define e...

2024 Spring

4

Theory

CH23 - ORGANIC SYNTHESIS

(a) Identify compound U which contains only three elements............................................................ [1](b) Describe the reagents an...

2024 Winter

2

Theory

CH23 - ORGANIC SYNTHESIS

Four esters, A, B, C and D, with the molecular formula C$_6$H$_{12}$O$_2$, are shown in Fig. 7.1.(a) Give the systematic name of ester A.................

2024 Summer

2

Theory

CH23 - ORGANIC SYNTHESIS

(a) (i) State the variation in solubilities of group 2 hydroxides........................................................................................

2023 Winter

2

Theory

CH23 - ORGANIC SYNTHESIS

(a) (i) State the variation in solubilities of group 2 hydroxides. ......................................................................................

2023 Winter

2

Theory

CH23 - ORGANIC SYNTHESIS

(a) State the molecular formula of the Sunset Yellow anion. ............................................................................................

2023 Winter

2

Theory

CH23 - ORGANIC SYNTHESIS

(a) Benzoyl chloride, $C_6H_5COCl$, can be made from ethyl benzene in a two-step process. A reaction scheme is shown. (i) Draw the intermediate org...

2023 Winter

2

Theory

CH23 - ORGANIC SYNTHESIS

(a) State the molecular formula of the Sunset Yellow anion...............................................................................................

2023 Winter

3

Theory

CH23 - ORGANIC SYNTHESIS

(a) Benzoyl chloride, $C_6H_5COCl$, can be made from ethyl benzene in a two-step process.A reaction scheme is shown.(i) Draw the intermediate organic ...

2023 Winter

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Copper and titanium are each used with aluminium to make alloys which are light, strong and resistant to corrosion. Aluminium, $Al$, is in the third p...

2009 Summer

2

Theory

CH10 - GROUP 2

Magnesium will react on heating with chlorine, or oxygen, or nitrogen to give the chloride, or oxide, or nitride respectively. Each of these compounds...

2009 Summer

2

Theory

CH15 - HYDROCARBONS

Concern over the ever-increasing use of fossil fuels has led to many suggestions for alternative sources of energy. One of these, suggested by Profess...

2009 Summer

2

Theory

CH22 - ANALYTICAL TECHNIQUES

(a) Complete the following reaction scheme which starts with ethanol.In each empty box, write the structural formula of the organic compound that woul...

2009 Summer

1

Theory

CH22 - ANALYTICAL TECHNIQUES

(a) When F is formed in step I no other compound is produced. Suggest a structural formula for F, which contains one –OH group.(b) Compound G has tw...

2009 Summer

2

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

(a) Complete the electronic configuration of aluminium and of titanium, proton number 22.\[\begin{array}{|c|c|} \hline \text{Al} & 1s^2 \\ \hline \tex...

2009 Summer

2

Theory

CH10 - GROUP 2

(a) (i) Write an equation, with state symbols, for the second ionisation energy of calcium...............................................................

2009 Summer

1

Theory

CH15 - HYDROCARBONS

Concern over the ever-increasing use of fossil fuels has led to many suggestions for alternative sources of energy. One of these, suggested by Profess...

2009 Summer

2

Theory

CH22 - ANALYTICAL TECHNIQUES

(a) Complete the following reaction scheme which starts with propanone. In each empty box, write the structural formula of the organic compound that w...

2009 Summer

2

Theory

CH22 - ANALYTICAL TECHNIQUES

Ethanol, CH$_3$CHO, can be converted into compound U by the following sequence.(a) When T is formed in step I, no other compound is produced.Suggest a...

2009 Summer

2