Theory

CH6 - ELECTROCHEMISTRY

Bismuth is an element in Group 15 of the Periodic Table.(a) Bismuth has metallic bonding.Draw a labelled diagram to show the metallic bonding in bismu...

2024 Spring

4

Theory

CH6 - ELECTROCHEMISTRY

(a) A and B react together to give product AB.A + B → ABWhen the concentrations of A and B are both 0.0100 mol dm−3, the rate of formation of AB i...

2024 Winter

3

Theory

CH6 - ELECTROCHEMISTRY

(a) Explain why transition elements form complex ions. .................................................................................................

2024 Winter

3

Theory

CH6 - ELECTROCHEMISTRY

Potassium iodide, KI, is used as a reagent in both inorganic and organic chemistry.(a) KI forms an ionic lattice that is soluble in water.(i) Define e...

2024 Spring

4

Theory

CH6 - ELECTROCHEMISTRY

(a) (i) Lithium nitrate, LiNO₃, decomposes on heating in a similar way to Group 2 nitrates to give the metal oxide, a brown gas and oxygen.Write an ...

2024 Summer

3

Theory

CH6 - ELECTROCHEMISTRY

(a) (i) Define transition element........................................................................................................................

2024 Summer

5

Theory

CH6 - ELECTROCHEMISTRY

(a) Equation 1 shows water acting as a Brønsted–Lowry acid. equation 1 \[ \text{H}_2\text{O} + \text{NO}_2^- \rightleftharpoons \text{HNO}_2 + \tex...

2024 Spring

2

Theory

CH6 - ELECTROCHEMISTRY

(a) When a sample of hydrated lithium ethanedioate, $\text{Li}_2\text{C}_2\text{O}_4 \cdot \text{H}_2\text{O}$, is gently heated, two gaseous products...

2024 Summer

2

Theory

CH6 - ELECTROCHEMISTRY

(a) Define standard electrode potential, $E^\text{o}$, including a description of standard conditions.(b) (i) An electrochemical cell is set up to mea...

2024 Summer

3

Theory

CH6 - ELECTROCHEMISTRY

(a) The equation for reaction 1 is shown.reaction 1\qquad X \rightarrow 2YReaction 1 is first order with respect to the concentration of X. The half-l...

2024 Winter

2

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

2

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

1

MCQ

CH6 - ELECTROCHEMISTRY

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

2013 Summer

1

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

3

MCQ

CH2 - ATOMIC STRUCTURE

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

2013 Summer

2

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

2

MCQ

CH5 - CHEMICAL ENERGETICS

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

2013 Summer

2

MCQ

CH8 - REACTION KINETICS

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

2013 Summer

2

MCQ

CH4 - STATES OF MATTER

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

2013 Summer

1

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

3