Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Oxygen is a Group 16 element. (a) (i) Write equations for the following reactions. • sodium and oxygen • sulfur and oxygen $\text{.............

2024 Winter

3

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Cobalt, rhodium and iridium are metals in the same group of the Periodic Table. (a) The shorthand electronic configuration of cobalt is [Ar]3d\(^7\)4s...

2024 Winter

2

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Chlorine is one of the elements in Group 17 of the Periodic Table.(a) (i) Describe the colours of the Group 17 elements, chlorine to iodine, at room t...

2024 Winter

3

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

CH_3(CH_2)_5CHBrCH_3 exists as a pair of stereoisomers.(a) Draw the three-dimensional structures of the two stereoisomers of CH_3(CH_2)_5CHBrCH_3. R c...

2024 Summer

2

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

(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

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

(a) P, Q, R and S show stereoisomerism.Complete Table 4.1 by identifying with a tick (✓) the type of stereoisomerism that each molecule shows.The ty...

2024 Spring

5

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

(a) V shows stereoisomerism.(i) Explain what is meant by stereoisomerism.................................................................................

2024 Summer

2

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Cobalt, rhodium and iridium are metals in the same group of the Periodic Table.(a) The shorthand electronic configuration of cobalt is [Ar]3d^7 4s^2.(...

2024 Winter

3

Theory

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

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

CH14 - AN INTRODUCTION TO ORGANIC CHEMISTRY

Ruthenium and osmium are transition metals below iron in Group 8 of the Periodic Table.(a) Two different complex ions, $X$ and $Y$, can form when anhy...

2024 Spring

2

MCQ

CH3 - CHEMICAL BONDING

Which molecule contains six bonding electrons?

2017 Summer

2

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

The mass spectrum of a sample of lithium shows that it contains two isotopes, $^6\text{Li}$ and $^7\text{Li}$.The isotopic abundances are shown in the...

2017 Summer

2

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

A sports medal has a total surface area of 150 cm$^2$. It was evenly coated with silver by electrolysis. Its mass increased by 0.216 g.How many atoms ...

2017 Summer

2

MCQ

CH2 - ATOMIC STRUCTURE

Which property of an atom does not affect its first ionisation energy?

2017 Summer

2

MCQ

CH3 - CHEMICAL BONDING

Which molecule has the largest overall dipole?

2017 Summer

1

MCQ

CH4 - STATES OF MATTER

The complete combustion of 2 moles of a straight chain alkane produces 400 dm^3 of carbon dioxide measured at 301 K and 1 \times 10^5 Pa. Carbon dioxi...

2017 Summer

2

MCQ

CH5 - CHEMICAL ENERGETICS

Which expression gives the standard enthalpy change of combustion of methane?

2017 Summer

1

MCQ

CH6 - ELECTROCHEMISTRY

Solutions containing chlorate(I) ions are used as household bleaches and disinfectants. These solutions decompose on heating as shown. $$3ClO^- \righ...

2017 Summer

2

MCQ

CH6 - ELECTROCHEMISTRY

When $K_2MnO_4$ is dissolved in water, the following reaction occurs:$aMnO_4^{2-}(aq) + bH_2O(l) \rightarrow cMnO_4^{-}(aq) + dMnO_2(s) + eOH^{-}(aq)$...

2017 Summer

2

MCQ

CH7 - EQUILIBRIA

Methanol can be produced from hydrogen and carbon monoxide.$2H_2(g) + CO(g) \rightleftharpoons CH_3OH(g)$What is the expression for $K_p$ for this rea...

2017 Summer

3