2017 A-Level H2 Chemistry Paper 1 — All Solutions

A sample of silicon contains three naturally occurring isotopes, \(^{28}\text{Si}\), \(^{29}\text{Si}\) and \(^{30}\text…

Use of the Data Booklet is relevant to this question. This question concerns the atoms of elements with atomic numbers 3…

Valence Shell Electron Pair Repulsion theory can be used to predict the bond angles in methanal. Which bond angle will t…

Water has a much higher boiling point than methane. What are the major reasons for this? 1. Strong hydrogen bonds exist …

During the operation of a refrigerator, the coolant is constantly being liquefied under pressure, and vaporised once the…

Which row correctly describes the species in terms of its behaviour as a Lewis base and as a Brønsted-Lowry acid?…

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

The table shows the fifth ionisation energies of four consecutive elements in the Periodic Table. What is the formula of…

Metal ions with a high polarising ability are less likely to form stable ionic peroxides with the peroxide ion, \(O_2^{2…

Use of the Data Booklet is relevant to this question. Carbon can exist naturally in two different crystalline forms, dia…

The half-life of the first-order gaseous reaction in which \(X_2\) molecules become converted into X atoms is 30 minutes…

Which suggested mechanism is consistent with the experimentally obtained rate equation?…

Use of the Data Booklet is relevant to this question. Pure water ionises according to the equation shown. \(2H_2O \right…

The graph shows how \(\Delta G^\circ\) changes with temperature for the reaction shown. \(H_2O(g) + CO(g) \rightleftharp…

Chrome Yellow, lead(II) chromate(VI), \(PbCrO_4\), is the pigment used for marking yellow lines on roads. Its solubility…

Which pairs of organic compounds contain the same number of hydrogen atoms in each of their molecules? 1. 2-aminopropane…

Use of the Data Booklet is relevant to this question. When a current is passed through a solution of acrylonitrile, \(CH…

\(\beta\)-selinene can be isolated from plant material. When \(\beta\)-selinene reacts completely with HBr, the produ…

Which reaction will produce a mixture of two enantiomers in aqueous solution?…

The South African plant Dichapetalum cymosum contains fluoroethanoic acid, \(FCH_2CO_2H\). The \(pK_a\) values of ethano…

Which row is correct?…

3-hydroxyanthranilic acid (HAA) is used in the biosynthesis of actinomycin by the bacterium, Streptomyces antibioticus. …

Equal amounts of compounds W, X, Y and Z are added separately to four test-tubes containing equal concentrations of etha…

By-products are formed during the preparation of many organic compounds. This usually occurs because the reagents can re…

The structures of mandelic acid and saligenin are shown. With how many moles of sodium does one mole of mandelic acid re…

Part of the chain of a protein is shown. Which shows one of the products obtained when this protein is hydrolysed by \…

Nucleophilic substitution of 3-bromo-3-ethylpentane follows an \(S_N1\) mechanism. The rate of reaction can be increa…

Which liquid is the best conductor of electricity?…

Which factors determine the number of atoms of copper deposited on the cathode of an electrolytic cell?…

Use of the Data Booklet is relevant to this question. A hydrogen-oxygen fuel cell is shown. In which direction do the el…