2025 A-Level H2 Chemistry: All Solutions

The table shows the nucleon number, the number of neutrons and the number of electrons in four different particles, W, X…

Use of the Data Booklet is relevant to this question. The charge on one mole of particle Q is +96500 C. One mole of …

Uranium hexafluoride, \(\text{UF}_6\), has a boiling point of 330 K. Thallium (I) iodide, \(\text{TlI}\), has a meltin…

What is a correct statement with a correct reason about the trends in ionisation energies in the Periodic Table?…

L and M are chlorides of elements from the third period. Both L and M produce a colourless solution when added to water …

Use of the Data booklet is relevant to this question. Iron (III) oxide can be reduced to iron using the sequence of re…

Which pair is not a Brønsted–Lowry conjugate acid–base pair?…

A hydrogen–oxygen fuel cell releases energy by oxidising hydrogen at one electrode and reducing oxygen at the other elec…

The Boltzmann distributions and activation energies, \(E_a\), for a homogeneous gaseous reaction under different conditi…

Nickel reacts with carbon monoxide on heating. \(\text{Ni(s)} + 4\text{CO(g)} \rightleftharpoons \text{Ni(CO)}_4\tex…

The graph shows how \(\Delta G^\circ\) changes with temperature for the reaction shown. \(\text{H}_2\text{O(g)} + \t…

The diagram shows compound X.…

A saturated solution of zinc(II) hydroxide has a \(K_{sp}\) value of \(2.3 \times 10^{-14}\). What is the concentrat…

Which types of reaction occur in the two-stage conversion of 1-bromopropane to 2-bromopropane?…

Compound P has a molecular formula of \(\text{C}_4\text{H}_8\text{O}_2\). Compound P contains only one functional gr…

Which gas takes part in the production of both photochemical smog and the formation of acid rain?…

An unknown organic compound is tested with warm silver nitrate solution. No visible result is seen after one hour. Two s…

In which reaction does the organic reactant behave as a nucleophile?…

Chlorine gas, \(^{35}Cl_2\), and ethane react together by a free-radical substitution mechanism that occurs via a series…

Which reagent and catalyst convert benzene into G?…

An ester, J, is hydrolysed by heating with aqueous sulfuric acid. The resulting reaction mixture is heated under reflux …

Which molecules may be used in protein formation? 1) 2,6-diaminohexanoic acid 2) 2-aminobenzoic acid 3) 3-aminopr…

Which statement about ethanoyl chloride is correct?…

In the gaseous state, molecules X, Y and Z behave as Lewis bases. In which order do the base strengths of X, Y and Z …

A student plans to prepare a sample of \(\text{C}_6\text{H}_5\text{CH}_2\text{CO}_2\text{CH}_3\) in a three-step process…

Use of the Data Booklet is relevant to this question. The following cell was set up under standard conditions. The c…

Use of the Data Booklet is relevant to this question. What is the value of \(\Delta G^\circ\) for the reaction shown…

Use of the Data Booklet is relevant to this question. Which metal ion is reduced to its metal by reaction with nickel…

Use of the Data Booklet is relevant to this question. A current of X amperes is passed through an aqueous solution o…

Use of the Data Booklet is relevant to this question. Element M has a proton number between 22 and 29. Which row i…

Worked video solution · 12 marks

Worked video solution · 9 marks

Worked video solution · 11 marks

Worked video solution · 19 marks

Worked video solution · 7 marks

Worked video solution · 8 marks

Worked video solution · 9 marks