MCQ

CH17 - HYDROXY COMPOUNDS

The diagram shows an experiment.Which processes could be demonstrated by using the above apparatus?1. the oxidation of ethanol (the liquid X)2. the de...

2009 Winter

Theory

CH17 - HYDROXY COMPOUNDS

The fermentation of starch or molasses using the bacterium Clostridium acetobutylicum, produces a mixture of propanone and butan-1-ol. (a) Give the r...

2009 Winter

Theory

CH17 - HYDROXY COMPOUNDS

Cyclohexanol and phenol are both solids with low melting points that are fairly soluble in water. (a) Explain why these compounds are more soluble ...

2009 Winter

MCQ

CH17 - HYDROXY COMPOUNDS

What will react differently with the two isomeric alcohols, $(\text{CH}_3)_3\text{CCH}_2\text{OH}$ and $(\text{CH}_3)_2\text{CHCH}_2\text{CH}_2\text{O...

2010 Summer

MCQ

CH17 - HYDROXY COMPOUNDS

What will react differently with the two isomeric alcohols, $(CH_{3})_{3}CCH_{2}OH$ and $(CH_{3})_{2}CHCH_{2}CH_{2}OH$?

2010 Summer

Theory

CH17 - HYDROXY COMPOUNDS

An organic compound, E, has the following composition by mass: C, 48.7%; H, 8.1%; O, 43.2%. (a) Calculate the empirical formula of E. (b) When vapo...

2010 Summer

MCQ

CH17 - HYDROXY COMPOUNDS

Which alcohol gives only one possible oxidation product when warmed with dilute acidified potassium dichromate(VI)?

2010 Winter

MCQ

CH17 - HYDROXY COMPOUNDS

Which alcohol gives only one possible oxidation product when warmed with dilute acidified potassium dichromate(VI)?

2010 Winter

MCQ

CH17 - HYDROXY COMPOUNDS

The responses A to D should be selected on the basis of [Table_1: A: 1, 2 and 3 are correct B: 1 and 2 only are correct C: 2 and 3 only are corr...

2010 Winter

Theory

CH17 - HYDROXY COMPOUNDS

Menthol and menthone, the main constituents of oil of peppermint, can be made synthetically from thymol by the following route.(a) State the \textit{t...

2010 Winter

Theory

CH10 - GROUP 2

Group 2 metals form alkaline solutions in water.(a) (i) Write the equation for the reaction of calcium oxide with water..................................

2020 Spring

Theory

CH11 - GROUP 17

(a) Describe the trend in the colour of the Group 17 elements down the group. ..........................................................................

2020 Spring

Theory

CH17 - HYDROXY COMPOUNDS

(a) A series of reactions starting from glycerol is shown. (i) Suggest the reagent(s) and conditions for reaction 1. ....................................

2020 Spring

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

Iron is a transition element in the fourth period. Iron forms compounds containing the ions $\text{Fe}^{2+}$ and $\text{Fe}^{3+}$.(a) (i) Define the t...

2020 Spring

Theory

CH10 - GROUP 2

(a) Group 2 metals form stable carbonates and sulfates.(i) State and explain the trend in the thermal stability of the Group 2 carbonates down the gro...

2020 Spring

Theory

CH6 - ELECTROCHEMISTRY

Gold is an unreactive metal that can only be oxidised under specific conditions.(a) The standard electrode potential, $E^{\circ}$, of $\text{Au}^{3+}(...

2020 Spring

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Compound F has been found in small quantities in some cereals and dried fruit.(a) (i) Give the name of the functional groups labelled A and B.A .........

2020 Spring

Theory

CH7 - EQUILIBRIA

Gallic acid, $C_7H_6O_5$, is a naturally occurring aromatic molecule. [Image_1: Structure of gallic acid] (a) Gallic acid contains the carboxylic ...

2020 Spring

Theory

CH19 - CARBOXYLIC ACIDS AND DERIVATIVES

Valinol can be synthesised by the following reactions. Reaction 1 uses valine as the starting material. (a) (i) Write an equation for reaction 1, u...

2020 Spring

MCQ

CH7 - EQUILIBRIA

Ethene can be oxidised to form epoxyethane, $C_2H_4O$.$$C_2H_4(g) + \frac{1}{2}O_2(g) \rightleftharpoons C_2H_4O(g) \quad \Delta H^\circ = -107 \text{...

2020 Summer