Theory

CH10 - GROUP 2

(a) Disodium phosphate, $(\text{Na}^+)_{2}(\text{HPO}_4^{2-})$, reacts with an acid to form monosodium phosphate, $\text{Na}^+(\text{H}_2\text{PO}_4^-...

2024 Winter

2

Theory

CH10 - GROUP 2

(a) Table 3.1 shows some properties of two Group 14 elements, C and Sn, in their standard states. The table is incomplete.\begin{center} Table 3.1 \en...

2024 Winter

2

Theory

CH10 - GROUP 2

(a) (i) Describe the trend in the solubility of the hydroxides of magnesium, calcium and strontium.Explain your answer...................................

2024 Summer

2

Theory

CH10 - GROUP 2

(a) Disodium phosphate, $(Na^+)_2(HPO_4^{2-})$, reacts with an acid to form monosodium phosphate, $Na^+(H_2PO_4^-)$.(i) Identify the ions that are a c...

2024 Winter

2

Theory

CH10 - GROUP 2

The Group 2 elements Mg to Ba are all silvery-white reactive metals.(a) (i) Draw a labelled diagram to show the bonding and structure of the Group 2 m...

2023 Spring

2

Theory

CH10 - GROUP 2

(a) (i) State the variation in solubilities of group 2 hydroxides........................................................................................

2023 Winter

2

Theory

CH10 - GROUP 2

NO and NO_2 react at 25 °C to give N_2O_3 as shown in the equation.NO(g) + NO_2(g) \rightleftharpoons N_2O_3(g) \hspace{5mm} \Delta H = -7.2 \, \text...

2023 Winter

3

Theory

CH10 - GROUP 2

(a) (i) State the variation in solubilities of group 2 hydroxides. ......................................................................................

2023 Winter

2

Theory

CH10 - GROUP 2

(a) Group 2 nitrates decompose when heated. Describe how the thermal stability of Group 2 nitrates changes with increasing proton number. Explain your...

2023 Summer

2

Theory

CH10 - GROUP 2

(a) The most common zinc mineral contains zinc(II) sulfide, ZnS.(i) Complete the electrons in boxes diagram in Fig. 1.1 to show the electronic configu...

2023 Spring

3

MCQ

CH8 - REACTION KINETICS

The diagram shows a Boltzmann distribution of molecular energies for a gaseous mixture. The distribution has a peak, labelled P on the diagram. What h...

2015 Summer

MCQ

CH3 - CHEMICAL BONDING

Which quantity gives the best indication of the relative strengths of the hydrogen bonds between the molecules in liquid hydrogen halides?

2015 Summer

MCQ

CH1 - ATOMS, MOLECULES & STOICHIOMETRY

Use of the Data Booklet is relevant to this question.1.00 g of carbon is combusted in a limited supply of pure oxygen. 0.50 g of the carbon combusts t...

2015 Summer

MCQ

CH6 - ELECTROCHEMISTRY

In oxygen difluoride, $\text{OF}_2$, fluorine has an oxidation number of $-1$. $\text{OF}_2$ will react with sulfur dioxide according to the following...

2015 Summer

MCQ

CH4 - STATES OF MATTER

Use of the Data Booklet is relevant to this question.The gas laws can be summarised in the ideal gas equation below.$pV = nRT$0.96 g of oxygen gas is ...

2015 Summer

1

MCQ

CH7 - EQUILIBRIA

One mole of phosphorus(V) chloride, $\text{PCl}_5$, is heated to 600 K in a sealed flask of volume 1 dm$^3$. Equilibrium is established and measuremen...

2015 Summer

MCQ

CH5 - CHEMICAL ENERGETICS

The standard enthalpy changes of combustion of glucose and ethanol are given as −2820 and −1368 kJ molˉ¹ respectively.Glucose, C$_6$H$_{12}$O$_6...

2015 Summer

1

MCQ

CH7 - EQUILIBRIA

In which reaction is the underlined substance acting as a base? A. $\text{HNO}_3 + \underline{\text{H}_2\text{SO}_4} \rightarrow \text{H}_2\text{NO}_...

2015 Summer

MCQ

CH7 - EQUILIBRIA

One molecule of haemoglobin, Hb, can bind with four molecules of oxygen according to the following equation. $$\text{Hb(aq)} + 4\text{O}_2\text{(aq)}...

2015 Summer

MCQ

CH3 - CHEMICAL BONDING

The double bond between the two carbon atoms in an ethene molecule consists of one \( \sigma \) bond and one \( \pi \) bond.Which orbitals overlap to ...

2015 Summer

1