Theory

CH18 - CARBONYL COMPOUNDS

Compound $W$ has molecular formula $C_4H_{10}O$. It contains only one functional group.(a) Table 5.1 shows the two peaks with the greatest $m/e$ value...

2024 Summer

2

Theory

CH18 - CARBONYL COMPOUNDS

Propanope, CH₃COCH₃, is an important organic reagent. Fig. 4.1 shows some reactions of propanone and its derivatives.[Image_1: Fig. 4.1 with react...

2024 Winter

4

Theory

CH18 - CARBONYL COMPOUNDS

Propanone, $\text{CH}_3\text{COCH}_3$, is an important organic reagent. Fig. 4.1 shows some reactions of propanone and its derivatives.(a) Reaction 1 ...

2024 Winter

3

Theory

CH18 - CARBONYL COMPOUNDS

(a) (i) Define addition reaction.........................................................................................................................

2023 Spring

2

Theory

CH18 - CARBONYL COMPOUNDS

Y is formed from X in a single-step reaction, as shown in Fig. 5.1.(a) Deduce the empirical formula of Y.................................................

2023 Summer

2

Theory

CH18 - CARBONYL COMPOUNDS

G belongs to a group of compounds called ethers.(a) When G, C₄H₁₀O, is heated, thermal decomposition occurs.C₄H₁₀O(g) → C₂H₆(g) + CO...

2022 Summer

2

Theory

CH18 - CARBONYL COMPOUNDS

Compounds J and K are found in plant oils.[Image_1: Illustration of compounds J and K]Fig. 4.1(a) (i) Complete Table 4.1 to state what you would obser...

2022 Spring

2

Theory

CH18 - CARBONYL COMPOUNDS

Hydroxyethanal, HOCH$_2$CHO, has been observed in dust clouds near the centre of our galaxy.hydroxyethanal(a) Predict the bond angles labelled x and y...

2021 Spring

2

Theory

CH18 - CARBONYL COMPOUNDS

(a) (i) Reaction 1 is an oxidation reaction.Give the reagent(s) and conditions required for reaction 1.reagent(s) .......................................

2021 Winter

2

Theory

CH18 - CARBONYL COMPOUNDS

(a) (i) Reaction 1 is an oxidation reaction.Give the reagent(s) and conditions required for reaction 1.reagent(s) .......................................

2021 Winter

2

MCQ

CH8 - REACTION KINETICS

The Boltzmann distribution for a gas at constant temperature is shown below. If the temperature of the gas is reduced by 10°C the graph changes shape...

2014 Summer

2

MCQ

CH2 - ATOMIC STRUCTURE

Which compound has the greatest total number of lone pairs of electrons in the valence shells of all of its atoms?

2014 Summer

2

MCQ

CH5 - CHEMICAL ENERGETICS

A reaction pathway diagram is shown. Which enthalpy change could the diagram not apply to?

2014 Summer

3

MCQ

CH2 - ATOMIC STRUCTURE

Use of the Data Booklet is relevant to this question.The most common ion-molecule reaction in gas clouds of the Universe is as shown.$$\text{H}_2(g) +...

2014 Summer

2

MCQ

CH6 - ELECTROCHEMISTRY

The electrolysis of brine using the diaphragm cell is an important industrial process. What happens at the anode?

2014 Summer

2

MCQ

CH5 - CHEMICAL ENERGETICS

Hydrazine, $\text{N}_2\text{H}_4$, is used as a rocket fuel because it reacts with oxygen as shown, producing 'environmentally friendly' gases.$\text{...

2014 Summer

2

MCQ

CH4 - STATES OF MATTER

A 10.0 cm^3 bubble of an ideal gas is formed on the sea bed where it is at a pressure of 2020 kPa. Just below the sea surface the pressure is 101 kPa ...

2014 Summer

2

MCQ

CH3 - CHEMICAL BONDING

Four substances have the physical properties shown in [Table_1].Which substance is an ionic solid?

2014 Summer

2

MCQ

CH5 - CHEMICAL ENERGETICS

The enthalpy change of formation of $\text{Mn(NO}_3)_2(\text{s})$ is $-696\text{ kJ mol}^{-1}$.The enthalpy change of formation of $\text{MnO}_2(\text...

2014 Summer

2

MCQ

CH3 - CHEMICAL BONDING

X is an element in Period 2. In which fluoride is the F−X−F angle the largest?

2014 Summer

2