Theory

CH8 - REACTION KINETICS

(a) \( NH_3(g) \) reacts with \( HCl(g) \) to produce \( NH_4Cl(s) \), as shown.\[ NH_3(g) + HCl(g) \rightarrow NH_4Cl(s) \]Draw a diagram to show the...

2024 Summer

2

Theory

CH8 - REACTION KINETICS

(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

CH8 - REACTION KINETICS

(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

Theory

CH8 - REACTION KINETICS

(a) In aqueous solution, persulfate ions, $S_2O_8^{2-}$, react with iodide ions, as shown in reaction 1.reaction 1 $S_2O_8^{2-} + 2I^- \rightarrow 2SO...

2024 Summer

2

Theory

CH8 - REACTION KINETICS

(a) In aqueous solution, persulfate ions, $\text{S}_{2}\text{O}_{8}^{2-}$, react with iodide ions, as shown in reaction 1.reaction 1 $\text{S}_{2}\tex...

2024 Summer

2

Theory

CH8 - REACTION KINETICS

(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 ...

2024 Winter

3

Theory

CH8 - REACTION KINETICS

Potassium chlorate, $KClO_3$, is widely used as an oxidising agent and to make $O_2(g)$.(a) Define oxidising agent.......................................

2023 Winter

2

Theory

CH8 - REACTION KINETICS

Fluorine reacts with chlorine dioxide, $ClO_2$, as shown.$$F_2(g) + 2ClO_2(g) \rightarrow 2FClO_2(g)$$The rate of the reaction is first order with res...

2023 Winter

2

Theory

CH8 - REACTION KINETICS

Potassium chlorate, $KClO_3$, is widely used as an oxidising agent and to make $O_2(g)$.(a) Define oxidising agent.......................................

2023 Winter

2

Theory

CH8 - REACTION KINETICS

Hypophosphorous acid is an inorganic acid.The conjugate base of hypophosphorous acid is $\text{H}_2\text{PO}_2^-$.(a) Give the formula of hypophosphor...

2023 Spring

1

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