AS & A Level Chemistry (9701) — May–June 2024, Paper 11
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Sample X is added to water and made up to a total volume of 200 cm^3. This gives a solution of 0.100 mol dm^-3 HCl. What is X? A 10 cm^3 of 1.00 mol dm^-3 HCl B 30 cm^3 of 0.90…
Answer this question and get it marked →A mixture of 10 cm^3 of methane and 10 cm^3 of ethane was sparked with an excess of oxygen. After cooling, the residual gas was passed through aqueous potassium hydroxide. All gas…
Answer this question and get it marked →Z is a compound of two elements, X and Y. Element X shows a very large increase between its 5th and 6th ionisation energies. It has the second largest 1st ionisation energy in its…
Answer this question and get it marked →Which statement about (131,53)I is correct? A A negative ion of (131,53)I contains 53 neutrons and 52 electrons. B A negative ion of (131,53)I contains 53 neutrons and 54…
Answer this question and get it marked →When solid aluminium chloride is heated, Al2Cl6 is formed. Which bonding is present in Al2Cl6? A covalent and coordinate (dative covalent) B covalent only C ionic and coordinate…
Answer this question and get it marked →The structure of the sulfur dioxide molecule is shown. The displayed structure has a central S atom double-bonded to two O atoms (O=S=O), with the S atom carrying a lone pair and…
Answer this question and get it marked →What is the density of a sample of fluorine gas at 32 degC and 100 000 Pa? Assume fluorine behaves as an ideal gas under these conditions. A 1.4 g dm^-3 B 1.5 g dm^-3 C 1.6 g…
Answer this question and get it marked →The graph shows the boiling points of the hydrogen compounds of Group 16 elements. The graph plots boiling point /degC against the period; H2O has a boiling point of 100 degC, H2S…
Answer this question and get it marked →An energy cycle is shown. At the top is CH4 + 2O2; an arrow X leads down to C + 2H2 + 2O2, and an arrow Y leads to CO2 + 2H2O. An arrow Z links C + 2H2 + 2O2 to CO2 + 2H2O. The…
Answer this question and get it marked →For a certain endothermic reaction, the activation energy is numerically equal to twice the enthalpy change of reaction. Which reaction pathway diagram is correct for this…
Answer this question and get it marked →Sodium chromate(VI), Na2CrO4, is manufactured by heating chromite, FeCr2O4, with sodium carbonate in an oxidising atmosphere. Chromite contains Cr2O4^2- ions. 2FeCr2O4 + 4Na2CO3 +…
Answer this question and get it marked →Oxygen can be prepared by the reaction of potassium manganate(VII), KMnO4, hydrogen peroxide, H2O2, and sulfuric acid, H2SO4. Each H2O2 molecule loses two electrons in this…
Answer this question and get it marked →An alcohol, ROH, reacts reversibly with ethanoic acid to produce an ester. ROH(l) + CH3COOH(l) <= CH3COOR(l) + H2O(l) 3.0 mol of ROH, 2.0 mol of ethanoic acid and 1.0 mol of water…
Answer this question and get it marked →Graphs can be drawn to show the percentage of ammonia at equilibrium when nitrogen and hydrogen are mixed at different temperatures and pressures. Which diagram correctly…
Answer this question and get it marked →The Boltzmann distribution for the hydrogenation of an alkene at a particular temperature in the absence of a catalyst is shown, with the activation energy Ea marked on the energy…
Answer this question and get it marked →Elements Y and Z are both in Period 3 of the Periodic Table. When the chloride of element Y is added to water, it reacts and a solution of pH 2 is produced. When the chloride of…
Answer this question and get it marked →Aluminium, silicon and phosphorus are elements in Period 3 of the Periodic Table. Each element forms an oxide. Which row is correct? Al2O3 SiO2 P4O10 --- --- --- --- A basic…
Answer this question and get it marked →Which statement is correct? A The atomic radius of silicon is larger than that of aluminium. B The boiling point of chlorine is higher than that of silicon. C The first ionisation…
Answer this question and get it marked →All solubility data in this question is given at the same temperature. The table gives some data for compounds of calcium and for compounds of X, an unidentified element in Group…
Answer this question and get it marked →What is the total volume of gas produced, measured at room conditions, when 0.010 mol of anhydrous magnesium nitrate is completely decomposed by heating? A 240 cm^3 B 480 cm^3 C…
Answer this question and get it marked →A solid sodium halide, NaX, is reacted with concentrated sulfuric acid. The lowest oxidation state of sulfur in the products is +4. Halogen Y2 is less volatile than halogen X2.…
Answer this question and get it marked →Compound Q dissolves in water. Q(aq) does not react with dilute sulfuric acid. Q(aq) forms a precipitate when aqueous silver nitrate is added. This precipitate is partially…
Answer this question and get it marked →Nitrogen dioxide is a gas that contributes to air pollution. It is produced in internal combustion engines. Which statement is correct? A Nitrogen dioxide acts as a catalyst in…
Answer this question and get it marked →What is the bond angle in the ammonium ion? A 90 deg B 107 deg C 109.5 deg D 120 deg
Answer this question and get it marked →Structural isomerism and stereoisomerism should be taken into account when answering this question. The structure of 3-methylcyclobutene is shown: a cyclobutene ring with a methyl…
Answer this question and get it marked →The diagram shows the structure of X: a molecule NC-CH=CH2 (acrylonitrile / prop-2-enenitrile), drawn with the NC group and an H on one alkene carbon and two H atoms on the other.…
Answer this question and get it marked →The diagram shows the skeletal formula of citric acid: a central carbon bearing an OH group and a CH2COOH group on each side and a COOH group directly attached. What is the…
Answer this question and get it marked →Which reaction occurs when ethane and chlorine are mixed in diffused sunlight? A a free-radical substitution with hydrogen given off B a free-radical substitution with hydrogen…
Answer this question and get it marked →A molecule of geraniol is shown: an open-chain terpene alcohol with two C=C double bonds and a terminal CH2OH group. What is formed when geraniol is reacted with an excess of cold…
Answer this question and get it marked →Q is either a primary or a tertiary halogenoalkane. Q undergoes hydrolysis with aqueous sodium hydroxide. The first step in the mechanism of this reaction involves two species…
Answer this question and get it marked →2-bromopropane is converted to 1,2-dibromopropane in a pathway involving two reactions: 2-bromopropane - (reaction 1) - compound X - (reaction 2) - 1,2-dibromopropane. What are…
Answer this question and get it marked →Compound X is a single, pure, optical isomer. Compound X is heated with an excess of concentrated H2SO4. Only one organic product is formed. What is compound X? Four structures…
Answer this question and get it marked →Which reagents could be used to form 2-bromobutane from butan-1-ol? A bromine and ultraviolet light B concentrated sulfuric acid with potassium bromide, under reflux C…
Answer this question and get it marked →X is a non-cyclic ketone with a single carbonyl group and no other functional groups. Ketone X has the following properties. - When ketone X is treated with NaBH4, the organic…
Answer this question and get it marked →Compound Y: - changes the colour of acidified K2Cr2O7 from orange to green - has no effect on Fehling's reagent - produces an orange precipitate with 2,4-dinitrophenylhydrazine…
Answer this question and get it marked →The product of the reaction between propanone and hydrogen cyanide is hydrolysed under acidic conditions. What is the formula of the final product? A CH3CH(OH)COOH B CH3CH2CH2COOH…
Answer this question and get it marked →P is a carboxylic acid with molecular formula C5H10O2. Carboxylic acid P reacts with an excess of LiAlH4 to form compound Q. Which pairs of molecules could be carboxylic acid P…
Answer this question and get it marked →Compound X is treated with an excess of dilute aqueous potassium hydroxide. X is a six-membered lactone (cyclic ester) carrying a methyl substituent on the ring. What is the…
Answer this question and get it marked →A section showing two repeat units of an addition polymer is shown: a carbon backbone where alternate carbons carry two CH3 groups and the others carry one CH3 group and one Cl…
Answer this question and get it marked →The relative atomic mass of antimony is 121.76. Antimony has two isotopes. The mass numbers of the two isotopes differ by two. The isotope with the lower mass number is the more…
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