2024 A-Level H2 Chemistry Paper 1 — All Solutions

Cation X has the same number of neutrons as protons. Cation X and an atom of neon have the same number of electrons. Wha…

Which statements about the bond energy of single covalent bonds are always correct? 1) A longer covalent bond result…

The boiling points of \(H_2O\), \(H_2S\) and \(H_2Se\) are different. \(H_2S\) has the lowest boiling point. Which sta…

The zwitterion of aminoethanoic acid is shown. What are the bond angles x, y and z in this structure?…

Consider the atoms of the Period 3 elements from Na to Ar. What is the total number of single unpaired electrons in th…

Use of the Data Booklet is relevant to this question. The percentage composition by mass of some compounds is given. …

The relative abundances of all the isotopes present in a sample of nickel are shown. What is the relative atomic mass …

Many metallic elements form peroxides, containing the \(O_2^{2-}\) ion, as well as oxides. Which compound has the leas…

The decomposition of \(SOCl_2\) is a first-order reaction. After 24 hours at a certain temperature, the concentration of…

Reactants P and Q are involved in a chemical reaction. In an experiment involving a large excess of Q, the graph of [P…

A Boltzmann distribution for a sample of a reacting gas at a constant temperature, \(T^\circ C\), is shown. The activa…

Iron is a suitable catalyst for the industrial synthesis of ammonia. Consider the two statements. 1) Iron is a good …

0.010 mol \(H_2(g)\) and 0.010 mol \(CO_2(g)\) are mixed in a 1.00 \(dm^3\) vessel at 700 K. \[H_2(g) + CO_2(g) \rightl…

Use of the Data Booklet is relevant to this question. Which graph shows the correct trends when the electronegativity …

The compounds listed are formed from their elements. For the formation of which compound does the reducing agent under…

Use of the Data Booklet is relevant to this question. In a titration experiment, 50.0 \(cm^3\) of 0.100 \(mol \, dm^{-…

A buffer solution is made by adding 25.0 \(cm^3\) of 0.15 \(mol \, dm^{-3}\) \(C_2H_5CO_2H\) to 10.0 \(cm^3\) of 0.20 \(…

\(C_2H_5MgBr\) is an example of a Grignard reagent. It behaves as if it contains the \(C_2H_5^-\) ion. 3-ethylpentan-3-…

\(\beta\)-selinene, \(C_{15}H_{24}\), can be isolated from plant material. When \(\beta\)-selinene reacts completely w…

When propene, \(CH_3CH=CH_2\), reacts with hydrogen bromide, the main product is 2-bromopropane. Very little 1-bromopr…

Use of the Data Booklet is relevant to this question. Compound Y, \(C_7H_7NO_2\), reacts with \(Br_2(aq)\) at room tem…

Which reaction will form \((CH_3)_2CHCH_2CO_2H\)?…

Which statement is correct?…

Propanone reacts with lithium aluminium hydride. Propene does not react with lithium aluminium hydride. Which statem…

Dimethyl formamide is a colourless liquid that is hydrolysed by aqueous sodium hydroxide. What are the products of thi…

A sample of \(H_2NCH_2COOH\) is dissolved in water. The pH of the solution is increased by adding an excess of hydroxide…

Use of the Data Booklet is relevant to this question. Copper plating is one application of electrolysis. A current o…

Use of the Data Booklet is relevant to this question. A student noted the relevant standard electrode potentials and c…

Use of the Data Booklet is relevant to this question. The 3d orbitals of the transition metal ions shown are split int…

Use of the Data Booklet is relevant to this question. An excess of sulfur dioxide, \(SO_2\), is bubbled into a warm so…