MCQ

CH11 - GROUP 17

Which graph correctly describes a trend found in the halogen group?[X represents a halogen atom.]

2009 Winter

Theory

CH11 - GROUP 17

(a) Describe and explain how the basicities of ammonia, ethylamine and phenylamine differ................................................................

2009 Winter

MCQ

CH11 - GROUP 17

X is a salt of one of the halogens chlorine, bromine, iodine, or astatine (proton number 85). The reaction scheme shows a series of reactions using a ...

2010 Summer

MCQ

CH11 - GROUP 17

Swimming pool water can be kept free of harmful bacteria by adding aqueous sodium chlorate(I), NaOCl. This reacts with water to produce HOCl molecules...

2010 Summer

MCQ

CH11 - GROUP 17

X is a salt of one of the halogens chlorine, bromine, iodine, or astatine (proton number 85).The reaction scheme shows a series of reactions using a s...

2010 Summer

MCQ

CH11 - GROUP 17

Chile saltpetre, NaNO_3, contains sodium iodide as an impurity. Aqueous silver nitrate is added to an aqueous solution of Chile saltpetre. Concentrate...

2010 Winter

MCQ

CH11 - GROUP 17

Which statement describes the halogens chlorine, bromine and iodine?

2010 Winter

MCQ

CH11 - GROUP 17

Which statement describes the halogens chlorine, bromine and iodine?

2010 Winter

MCQ

CH11 - GROUP 17

Which equation represents the change corresponding to the enthalpy change of atomisation of iodine?

2010 Winter

Theory

CH11 - GROUP 17

The gaseous hydrogen halides HCl, HBr and HI, may be prepared by reacting the corresponding sodium salt with anhydrous phosphoric(V) acid, H₃PO₄.W...

2010 Winter

Theory

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Some intercontinental jet airliners use kerosene as fuel. The formula of kerosene may be taken as $C_{14}H_{30}$.(a) To which homologous series of com...

2011 Summer

Theory

CH15 - HYDROCARBONS

(a) (i) What is meant by the term `cracking` and why is it carried out?..................................................................................

2011 Summer

Theory

CH10 - GROUP 2

(a) State the formula of each of the calcium compounds U to Y.   U V W X Y (b) Compound Y may be converted into compound V. Out...

2011 Summer

Theory

CH18 - CARBONYL COMPOUNDS

Ketones are widely used as solvents and as intermediates in the chemical industry.Ketones contain the reactive keto group, $\text{C=O}$.(a) Propanone,...

2011 Summer

Theory

CH5 - CHEMICAL ENERGETICS

(a) When calcium carbide is reacted with water, ethyne and calcium hydroxide are formed. Construct a balanced equation for this reaction. (b) (i) Wh...

2011 Summer

Theory

CH7 - EQUILIBRIA

Ethanoic acid can be reacted with alcohols to form esters, an equilibrium mixture being formed.$$\text{CH}_3\text{CO}_2\text{H} + \text{ROH} \rightlef...

2011 Summer

Theory

CH16 - HALOGEN DERIVATIVES

(a) Use relevant bond energies from the Data Booklet, and the equation below to calculate a value for the bond energy of the C–F bond.CH$_2$ = CH$_2...

2011 Summer

Theory

CH10 - GROUP 2

(a) State the formula of each of the barium compounds R to W.R .................................... S ....................................T .............

2011 Summer

Theory

CH6 - ELECTROCHEMISTRY

(a) (i) Describe, with the aid of a fully labelled diagram, the industrial electrolysis of brine in a diaphragm cell. State what each electrode is mad...

2011 Summer

Theory

CH19 - CARBOXYLIC ACIDS AND DERIVATIVES

Although there are many different types of food eaten around the world, animal fats and/or vegetable oils are commonly used in cooking.Animal fats and...

2011 Summer