MCQ

CH16 - HALOGEN DERIVATIVES

The following diagram represents the structure of a possible polymer.By which method might this polymer be made?

2009 Winter

MCQ

CH16 - HALOGEN DERIVATIVES

Which statements about the reaction of solid sodium bromide with concentrated sulfuric acid are correct?1. Hydrogen bromide is a product of the reacti...

2009 Winter

MCQ

CH16 - HALOGEN DERIVATIVES

Which statements are true for an $S_N2$ reaction? 1. One bond is broken as another bond is formed. 2. The formation of a transition state involves t...

2009 Winter

Theory

CH16 - HALOGEN DERIVATIVES

One method of making 1-bromobutane in the laboratory is described below.[Table_1](a) The overall reaction may be considered to take place in two stage...

2009 Winter

MCQ

CH16 - HALOGEN DERIVATIVES

In many countries plastic waste is collected separately and sorted. Some of this is incinerated to provide heat for power stations.Why is PVC, polyvin...

2010 Summer

MCQ

CH16 - HALOGEN DERIVATIVES

When an isomer Y of molecular formula C₄H₉Br undergoes hydrolysis in aqueous alkali to form an alcohol C₄H₉OH, the rate of reaction is found t...

2010 Summer

MCQ

CH16 - HALOGEN DERIVATIVES

Which reactions are examples of nucleophilic substitution?1. $\text{CH}_3\text{CH}_2\text{Br} + \text{OH}^- \rightarrow \text{CH}_3\text{CH}_2\text{OH...

2010 Summer

MCQ

CH16 - HALOGEN DERIVATIVES

When an isomer Y of molecular formula C_4H_9Br undergoes hydrolysis in aqueous alkali to form an alcohol C_4H_9OH, the rate of reaction is found to be...

2010 Summer

MCQ

CH16 - HALOGEN DERIVATIVES

Which reactions are examples of nucleophilic substitution? 1. $\text{CH}_3\text{CH}_2\text{Br} + \text{OH}^- \rightarrow \text{CH}_3\text{CH}_2\text{...

2010 Summer

MCQ

CH16 - HALOGEN DERIVATIVES

Which compound undergoes an $S_N1$ substitution reaction?

2010 Winter

Theory

CH2 - ATOMIC STRUCTURE

Fig. 1.1 shows how first ionisation energies vary across Period 2.(a) Construct an equation to represent the first ionisation energy of oxygen. Includ...

2022 Spring

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Some oxides of elements in Period 3 are shown.$\text{Na}_2\text{O}$\hspace{1cm}$\text{Al}_2\text{O}_3$\hspace{1cm}$\text{P}_4\text{O}_6$\hspace{1cm}$\...

2022 Spring

Theory

CH11 - GROUP 17

The hydrogen halides HCl, HBr and HI are all colourless gases at room temperature.(a) The hydrogen halides can be formed by reacting the halogens with...

2022 Spring

Theory

CH18 - CARBONYL COMPOUNDS

Compounds J and K are found in plant oils.[Image_1: Illustration of compounds J and K]Fig. 4.1(a) (i) Complete Table 4.1 to state what you would obser...

2022 Spring

Theory

CH7 - EQUILIBRIA

Iodine is found naturally in compounds in many different oxidation states.(a) Iodide ions, $\text{I}^-$, react with acidified $\text{H}_2\text{O}_2$(a...

2022 Spring

Theory

CH5 - CHEMICAL ENERGETICS

Silicon is the second most abundant element by mass in the Earth's crust.(a) In industry, silicon is extracted from SiO$_2$ by reaction with carbon at...

2022 Spring

Theory

CH12 - AN INTRODUCTION TO THE CHEMISTRY OF TRANSITION ELEMENTS

Titanium is a transition element in Period 4. It is commonly found as TiO2 in minerals.(a) (i) Define transition element.................................

2022 Spring

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Compounds F and J are shown in Fig. 4.1.Fig. 4.1(a) F and J both contain the arene functional group.(i) Identify...

2022 Spring

Theory

CH19 - CARBOXYLIC ACIDS AND DERIVATIVES

2-Chloropropanoic acid, CH₃CHClCOOH, is used in many chemical syntheses.(a) (i) An equilibrium is set up when CH₃CHClCOOH is added to water. Write...

2022 Spring

Theory

CH19 - CARBOXYLIC ACIDS AND DERIVATIVES

Lidocaine is used as an anaesthetic. A synthesis of lidocaine is shown in Fig. 6.1.(a) W can be formed by reacting HOCH$_2$COOH with an excess of SOCl...

2022 Spring