AS & A Level Chemistry (9701) — May–June 2024, Paper 12
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Which pair of formulae is correct? A Ag2CO3 and (NH4)3NO3 B K2HCO3 and Zn3(PO4)2 C AgHCO3 and K3PO4 D ZnCO3 and (NH4)2PO4
Answer this question and get it marked →How many molecules are present in 62 g of solid white phosphorus, P4? (L is the Avogadro constant.) A L B 2L C L/2 D L/4
Answer this question and get it marked →The first eight successive ionisation energies for two elements of Period 3 of the Periodic Table are shown in the graphs. The first graph (left element) shows a small rise from…
Answer this question and get it marked →In which pairs are both species free radicals? 1 Cl and O 2 Cl^- and O^2- 3 Cl and O^- 4 Cl^+ and O^2+ A 1, 3 and 4 B 1 and 3 only C 1 only D 2 only
Answer this question and get it marked →Which shape is correctly predicted by VSEPR theory? number of bonded electron pairs number of lone pairs shape --- --- --- --- A 2 2 linear B 2 2 tetrahedral C 3 1 pyramidal D 3 1…
Answer this question and get it marked →In which species does the underlined atom have an incomplete outer shell? A underlined B in BF3 B underlined C in CH3^- C underlined O in F2O D underlined O in H3O^+
Answer this question and get it marked →In this question it should be assumed that nitrogen behaves as an ideal gas under the conditions stated. Which volume is occupied by 1.00 g of nitrogen at 50.0 degC and at a…
Answer this question and get it marked →Consider the following four compounds. 1 (CH3)3CH 2 CH3CH2CH2OH 3 CH3CH2CH2SH 4 CH3CH2CH2CH3 What is the order of increasing boiling point of the compounds (lowest first)? A 1 - 4…
Answer this question and get it marked →Ethane can react with fluorine to produce 1,2-difluoroethane, C2H4F2. C2H6 + 2F2 - C2H4F2 + 2HF deltaH = -960 kJ mol^-1 Bond energies / kJ mol^-1: C-H = 410; C-C = 350; F-F = 158;…
Answer this question and get it marked →Which equation has an enthalpy change equal to the standard enthalpy of formation of sodium oxide? A Na(s) + 1/4 O2(g) - 1/2 Na2O(s) B Na(s) + O2(g) - Na2O(s) C 2Na(s) + 1/2 O2(g)…
Answer this question and get it marked →Nitrogen dioxide reacts with water. 2NO2 + H2O - HNO2 + HNO3 Which statement about this reaction is correct? A Both products are formed because oxygen atoms gain electrons. B…
Answer this question and get it marked →Phosphorus reacts with concentrated sulfuric acid to produce phosphoric acid, sulfur dioxide and water. aH2SO4 + bP - cH3PO4 + dSO2 + eH2O a, b, c, d and e are all whole numbers.…
Answer this question and get it marked →The volume of ammonia produced against time is measured in two experiments. N2(g) + 3H2(g) <= 2NH3(g) deltaH = -92 kJ mol^-1 In experiment 1, 3 mol of H2(g) and 1 mol of N2(g)…
Answer this question and get it marked →Which reaction has an equilibrium constant, Kp, that has no units? A H2(g) + I2(g) <= 2HI(g) B 3H2(g) + N2(g) <= 2NH3(g) C 2NO2(g) <= N2O4(g) D 2SO2(g) + O2(g) <= 2SO3(g)
Answer this question and get it marked →Gas Q decomposes slowly at room temperature. Q(g) - X(g) + Z(g) The Boltzmann distribution curve for gas Q at room temperature is shown, with the activation energy Ea marked on…
Answer this question and get it marked →Which statement is correct? A Aluminium chloride has a giant ionic lattice of Al^3+ and Cl^- ions. B Sodium chloride dissolves in water, forming hydrogen chloride and sodium…
Answer this question and get it marked →A mixture of calcium carbonate, calcium nitrate, strontium carbonate and strontium nitrate is thermally decomposed. The decomposition reaction of each substance goes to…
Answer this question and get it marked →W is a solid that reacts with water to produce an alkaline solution. The addition of two drops of dilute H2SO4 to this alkaline solution produces a white precipitate. What could…
Answer this question and get it marked →Chlorine gas is reacted with cold aqueous sodium hydroxide. Which statement is correct for this reaction? A Chlorine is both oxidised and reduced. B Chlorine is neither oxidised…
Answer this question and get it marked →Sodium is added to water to form solution Y. The pH of solution Y is measured. When powdered substance X is added to solution Y, the pH falls. Which two compounds could each be…
Answer this question and get it marked →The table shows statements about some of the properties of halogens and their compounds and explanations for these properties. Which row shows a correct statement about the…
Answer this question and get it marked →Which statement describes a property of an ammonium ion? A An aqueous ammonium ion is a weak Bronsted-Lowry base. B Aqueous ammonium sulfate reacts with dilute hydrochloric acid…
Answer this question and get it marked →Catalytic converters are fitted in the exhaust systems of many cars. Gas X: - causes acid rain if it is released into the air - is removed from car exhaust fumes by a catalytic…
Answer this question and get it marked →In the general formula of which class of compound is the ratio of hydrogen atoms to carbon atoms the highest? A alcohols B aldehydes C carboxylic acids D halogenoalkanes
Answer this question and get it marked →Which statement is correct? A Adding sodium oxide to water gives a lower pH solution than adding silicon oxide to water. B The oxidation state of sodium in its chloride is higher…
Answer this question and get it marked →Z is a gaseous hydrocarbon which has a density of 3.50 x 10^-3 g cm^-3 under room conditions. Z reacts with an excess of hot concentrated acidified KMnO4. Only one type of…
Answer this question and get it marked →Compound X can be oxidised to compound Y. Compound Y gives a yellow precipitate with alkaline I2(aq). What is compound X? A butan-1-ol B butan-2-ol C methylpropan-1-ol D…
Answer this question and get it marked →Aqueous NaOH reacts with 1-bromopropane to give propan-1-ol. What should be included in a diagram of the first step in the mechanism? A a curly arrow from a lone pair on the OH^-…
Answer this question and get it marked →In which reaction is the organic compound oxidised? A CH3CH2CH2CHO + Tollens' reagent B CH3CH2CH2CHO + LiAlH4 C CH3CH2CH2OH + concentrated H3PO4 D CH3CO2C2H5 + dilute H2SO4
Answer this question and get it marked →1 mole of each of the following four compounds is reacted separately with an excess of sodium and an excess of sodium carbonate. Which compound produces the same volume of gas…
Answer this question and get it marked →Which reaction will distinguish between propan-1-ol and propan-2-ol? A warming with acidified KMnO4 B warming with acidified K2Cr2O7 C dehydration, followed by reaction with…
Answer this question and get it marked →Compound T has the skeletal formula shown: a branched alkane (an isomer of nonane / C9H20) drawn as a chain with several methyl branches. Which structure is a structural isomer of…
Answer this question and get it marked →The diagram shows a simplified structure of coenzyme Q10: a quinone ring (a 6-membered ring with two C=O groups) bearing two CH3O- substituents and a methyl group, attached to a…
Answer this question and get it marked →The molecule of limonene, C10H16, contains a 6-membered ring. This is the only cyclic component in its structure. Which volume of hydrogen, at room conditions, is required to…
Answer this question and get it marked →1-bromopropane reacts with hot ethanolic NaOH. What is the molecular formula of the product in this reaction? A C3H6 B C3H8 C C3H7O D C3H8O
Answer this question and get it marked →A sample of pent-2-en-4-ol, C5H10O, contains all the possible stereoisomers of this compound. How many stereoisomers are there in the sample? A 2 B 3 C 4 D 5
Answer this question and get it marked →Which pair of reagents reacts to form a product with a chiral carbon atom? A CH3CH=CH2 + HBr B (CH3)2C=O + NaBH4 C CH3CH2CHO + HCN D CH3COOH + CH3CH2OH
Answer this question and get it marked →The diagrams show the structures of two esters, X and Y, that are formed in ripening apples. Ester X is 3-methylbutyl ethanoate (an ethanoate ester of a branched alcohol). Ester Y…
Answer this question and get it marked →An addition polymer is made from monomer Z, which has the structure CH2=CH-C(=O)-OCH2CH3 (ethyl propenoate / ethyl acrylate). What is the structure of the polymer made from this…
Answer this question and get it marked →Compound X reacts with acidified K2Cr2O7 to form compound Y. The infrared spectrum of compound Y is shown. The spectrum shows a strong broad absorption around 2500-3000 cm^-1…
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