Theory

CH7 - EQUILIBRIA

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

Theory

CH7 - EQUILIBRIA

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

Theory

CH7 - EQUILIBRIA

(a) Explain what is meant by the Bronsted-Lowry theory of acids and bases................................................................................

2009 Summer

Theory

CH7 - EQUILIBRIA

A large number of organic compounds are soluble in both water and non-aqueous solvents such as hexane. If such a compound is shaken with a mixture of ...

2009 Summer

MCQ

CH7 - EQUILIBRIA

The equilibrium \[ \text{N}_2(g) + \text{O}_2(g) ightleftharpoons 2\text{NO}(g) \quad \Delta H = +180 \, \text{kJ mol}^{-1} \] contributes to a serie...

2009 Winter

MCQ

CH7 - EQUILIBRIA

PCl\textsubscript{5} dissociates as follows:\( \text{PCl}_5(g) \rightarrow \text{PCl}_3(g) + \text{Cl}_2(g) \)The extent of dissociation is 13\% at 16...

2009 Winter

MCQ

CH7 - EQUILIBRIA

Which equilibria, in which all species are gaseous, would have equilibrium constants, $K_p$, with no units? 1. sulfur dioxide and oxygen in equilibri...

2009 Winter

MCQ

CH7 - EQUILIBRIA

Why does a mixture of hydrogen gas and bromine gas react together faster at a temperature of 500K than it does at a temperature of 400K?1. A higher pr...

2009 Winter

Theory

CH7 - EQUILIBRIA

One major difference between the properties of compounds of the transition elements and those of other compounds is that the compounds of the transiti...

2009 Winter

Theory

CH7 - EQUILIBRIA

(a) Analysis of the bodies of birds of prey show that the pesticide residues accumulate in the fatty tissues of the birds. This is because of the high...

2009 Winter

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Solutions containing chlorate(I) ions are used as household bleaches and disinfectants. These solutions decompose on heating as shown.$$3 ext{ClO}^- ...

2013 Summer

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

A mixture of 10 cm³ of methane and 10 cm³ of ethane was sparked with an excess of oxygen. After cooling to room temperature, the residual gas was pa...

2013 Summer

MCQ

CH6 - ELECTROCHEMISTRY

The diagram shows an electrolytic cell for the extraction of aluminium. Which statement is correct?

2013 Summer

MCQ

CH2 - ATOMIC STRUCTURE

Use of the Data Booklet is relevant to this question.The elements radon (Rn), francium (Fr) and radium (Ra) have proton numbers 86, 87 and 88 respecti...

2013 Summer

MCQ

CH2 - ATOMIC STRUCTURE

In which species are the numbers of protons, neutrons and electrons all different?

2013 Summer

MCQ

CH7 - EQUILIBRIA

An experiment is set up to measure the rate of hydrolysis of ethyl ethanoate. $$ \text{CH}_3\text{CO}_2\text{C}_2\text{H}_5 + \text{H}_2\text{O} \righ...

2013 Summer

MCQ

CH5 - CHEMICAL ENERGETICS

The reaction pathway for a reversible reaction is shown below. Which statement is correct?

2013 Summer

MCQ

CH8 - REACTION KINETICS

Why does the rate of a gaseous reaction increase when the pressure is increased at a constant temperature?

2013 Summer

MCQ

CH4 - STATES OF MATTER

Which would behave the least like an ideal gas at room temperature?

2013 Summer

MCQ

CH4 - STATES OF MATTER

The general gas equation can be used to calculate the $M_r$ value of a gas. For a sample of a gas of mass $mg$, which expression will give the value o...

2013 Summer