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

CH4 - STATES OF MATTER

The rate of chemical reactions is affected by changes in temperature and pressure.(a) (i) Draw a curve on the axes to show the Boltzmann distribution ...

2021 Spring

Theory

CH11 - GROUP 17

Chlorine, $Cl_2$, is a reactive yellow-green gas. It is a strong oxidising agent.(a) State how $Cl_2$ is used in water purification......................

2021 Spring

Theory

CH5 - CHEMICAL ENERGETICS

Compounds P, Q and R have all been found in the atmosphere of one of Saturn’s moons. P: N≡C—C≡C—C≡C—N Q: H—C≡C—C≡N R: ![Cyclopr...

2021 Spring

Theory

CH3 - CHEMICAL BONDING

Hydroxyethanal, HOCH$_2$CHO, has been observed in dust clouds near the centre of our galaxy.hydroxyethanal(a) Predict the bond angles labelled x and y...

2021 Spring

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

(a) The most common oxidation states of cobalt are +2 and +3.Complete the electronic configurations of the following free ions.• Co2+ [Ar] .........

2021 Spring

Theory

CH6 - ELECTROCHEMISTRY

(a) Iron(II) compounds are generally only stable in neutral, non-oxidising conditions.It is difficult to determine the lattice energy of FeO experimen...

2021 Spring

Theory

CH3 - CHEMICAL BONDING

Iodates are compounds that contain the $\text{IO}_3^{-}$ anion.(a) The $\text{IO}_3^{-}$ anion is shown.Explain, with reference to the qualitative mod...

2021 Spring

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

The transition elements are able to form stable complexes with a wide range of molecules and ions.(a) State the meaning of transition element............

2021 Spring

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

(a) Carboplatin and satraplatin are used as anticancer drugs instead of cisplatin. (i) Describe the action of cisplatin as an anticancer drug. ........

2021 Spring

Theory

CH19 - CARBOXYLIC ACIDS AND DERIVATIVES

Fumaric acid is a naturally occurring dicarboxylic acid.\\[ \text{fumuric acid} \] \[ \text{HO}_2\text{C}=\text{CH}-\text{CH}=\text{CO}_2\text{H} \](a...

2021 Spring