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

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

This question refers to isolated gaseous atoms.In which atom are all electrons paired?

2018 Summer

1

MCQ

CH3 - CHEMICAL BONDING

Which compound has a boiling point that is influenced by hydrogen bonding?

2018 Summer

MCQ

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Which fuel would produce the largest mass of CO$_2$ when 10 kg of the fuel undergo complete combustion?

2018 Summer

MCQ

CH5 - CHEMICAL ENERGETICS

The diagram shows the Boltzmann distribution of energies in a gas. The gas can take part in a reaction with an activation energy, $E_a$. The gas is ma...

2018 Summer

MCQ

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Which molecule has no overall dipole?

2018 Summer

1

MCQ

CH3 - CHEMICAL BONDING

Which solid contains more than one type of bonding?

2018 Summer

1

MCQ

CH5 - CHEMICAL ENERGETICS

Enthalpy changes of combustion can be used to determine enthalpy changes of formation. The following equation represents the enthalpy change of format...

2018 Summer

MCQ

CH6 - ELECTROCHEMISTRY

Ethanedioate ions, $\text{C}_2\text{O}_4^{2-}$, react with a suitable reagent to form $\text{CO}_2$. A half-equation for this reaction is shown. $\te...

2018 Summer

MCQ

CH6 - ELECTROCHEMISTRY

Oxidation numbers should be used to answer this question.A redox reaction takes place between hydroxylammonium ions, $[\text{NH}_3\text{OH}]^+$, and a...

2018 Summer

MCQ

CH5 - CHEMICAL ENERGETICS

Element X has a higher first ionisation energy than element Y.Two students state what they believe is one factor that helps to explain this.student 1 ...

2018 Summer

1