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

Theory

CH2 - ATOMIC STRUCTURE

(a) Complete the table to show the composition and identity of some atoms and ions.[Table]name of element | nucleon number | atomic number | number of...

2016 Summer

Theory

CH4 - STATES OF MATTER

D, E, F, and G are four consecutive elements in the fourth period of the Periodic Table. (The letters are not the actual symbols of the elements.)D is...

2016 Summer

Theory

CH10 - GROUP 2

The elements in Group 2, and their compounds, show many similarities and trends in their properties.(a) Magnesium, calcium, strontium and barium all r...

2016 Summer

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

This question is about molecules with molecular formula $C_4H_8$.(a) Give the structures of a pair of **positional** isomers with the formula $C_4H_8$...

2016 Summer

Theory

CH22 - ANALYTICAL TECHNIQUES

(a) Complete the diagram to show the mechanism of reaction 1. Include all necessary charges, partial charges, lone pairs and curly arrows.H3C—C—Br...

2016 Summer

Theory

CH2 - ATOMIC STRUCTURE

(a) Complete the table to show the composition and identity of some atoms and ions.[Table_1]name of element | nucleon number | atomic number | number ...

2016 Summer

Theory

CH5 - CHEMICAL ENERGETICS

The elements in Group 17, the halogens, and their compounds, show many similarities and trends in their properties. Some data are given for the elemen...

2016 Summer

Theory

CH6 - ELECTROCHEMISTRY

Acidified potassium dichromate(VI) can oxidise ethanedioic acid, $H_2C_2O_4$. The relevant half-equations are shown. $$Cr_2O_7^{2-} + 14H^+ + 6e^- \r...

2016 Summer

Theory

CH22 - ANALYTICAL TECHNIQUES

This question is about molecules with molecular formula $C_4H_8O_2$.(a) Give the structural formulae of the pair of extbf{chain} isomers with the for...

2016 Summer

Theory

CH17 - HYDROXY COMPOUNDS

A reaction sequence based on propan-1-ol is shown. (a) Reactions 1 and 2 can both be carried out using the same reagents. (i) Identify suitable rea...

2016 Summer