Learn Extracted exam questions A-Level Chemistry 9701 Chemistry November 2025 Question Paper 11
9701 Chemistry November 2025 Question Paper 11
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What is the electronic configuration for the particle ? A + l
The data in the table gives the 5th to the 10th ionisation energies of three elements from Period 3 of the Periodic Table. element ionisation energy / kJ mol–1 5th 6th 7th 8th 9th 10th X 6274 21 269 25 398 29 855 35 868 40 960 Y 7012 8 496 27 107 31 671 36 579 43 140 Z 6542 9 362 11 018 33 606 38 601 43 963 What are the correct identities of these three elements? element X element Y element Z
What contains 9.03 1023 oxygen atoms?
Methane and steam react to produce hydrogen. CH4(g) + 2H2O(g) CO2(g) + 4H2(g) 0.80 g of methane and 1.35 g of steam react. One of the reactants is used up. Which volume of hydrogen, measured at room conditions, will be produced?
Which statement explains why sodium and potassium have different melting points?
NH3 and HCN react together to form NH4CN, an ionic compound. Which row states the number of coordinate bonds and the number of bonds in one formula unit of NH4CN? number of coordinate bonds number of bonds
When 1.0 mol of ethanoic acid, CH3COOH, in aqueous solution is neutralised by an excess of aqueous sodium hydroxide, 55 kJ mol–1 of energy is released. Which statement about this reaction is correct?
In an experiment, 1.60 g of a fuel is burnt. 45.0% of the energy released is absorbed by 200 g of water. The temperature of the water rises from 18.0 °C to 66.0 °C. What is the total energy released per gram of fuel burnt?
Sulfite ions, SO3 2–, react separately with zinc and with manganese dioxide. a, b, c, d, w, x, y and z are all whole numbers. aSO3 2–(aq) + b H2O(l) + Zn(s) Zn2+(aq) + c OH–(aq) + d S2O4 2–(aq) MnO2(s) + w SO3 2–(aq) + x H+(aq) Mn2+(aq) + y S2O6 2–(aq) + z H2O(l) Which numbers are correct for a, b, w and x? a b w x
Which equation shows hydrogen acting as an oxidising agent?
1.00 g of nitrogen gas is stored in a 2.00 dm3 vessel at 40.0 °C. What is the pressure in the vessel?
One molecule of haemoglobin, Hb, can bind with four molecules of oxygen according to the equation shown. Hb(aq) + 4O2(aq) Hb(O2)4(aq) When the equilibrium concentration of O2 is 7.6 10–6 mol dm–3, the equilibrium concentrations of Hb and Hb(O2)4 are equal. What is the numerical value of Kc for this equilibrium?
Aqueous acid P and aqueous alkali Q have the same concentration. 20 cm3 of P is added to a conical flask. Q is slowly added to the flask and the volume of Q and the pH are recorded. The pH titration curve is shown.
8 10 12 14 volume of Q added / cm3 16 18 20 22 24 26 28 30 pH Which row gives the identity of P and Q? P Q
The reversible reaction between methanol and ethanoic acid liquids is catalysed by adding a small volume of concentrated sulfuric acid. Two statements about this reaction are listed. The sulfuric acid is a homogeneous catalyst. The sulfuric acid lowers the activation energy of the reverse reaction. Which statements are correct?
The atomic radii and ionic radii for three elements in Period 3 are shown. atomic radius / nm ionic radius / nm element X 0.118 0.053 element Y 0.099 0.180 element Z 0.160 0.072 Using this data, which statement is correct?
Three equations are listed. x, y and z are all whole numbers. x Al + y O2 zAl 2O3 x Mg + y O2 z MgO x Na + y O2 z Na2O Which equations can be balanced if x = 4 and z = 2?
Which oxide has a simple structure rather than a giant structure?
The trends seen in Group 2 can be used to predict the properties of radium and its compounds. Which statement is correct?
Equal masses of CaCO3, Ca(NO3)2, BaCO3 and Ba(NO3)2 are thermally decomposed. The volume of gas produced in each experiment is measured under the same conditions. Which compound will produce the greatest volume of gas?
Equation 1 and equation 2 show two different reactions of halide ion Q– with concentrated sulfuric acid. equation 1 H2SO4 + Q– HSO4 – + HQ equation 2 H2SO4 + 2Q– + 2H+ SO2 + Q2 + 2H2O What is Q?
What happens when iodine solution is added to a solution of sodium bromide?
Which statement is correct?
When dry ammonia and hydrogen chloride gases are mixed, a solid white ionic compound is formed. Two statements are listed. The formation of the ionic compound is a redox reaction. During the formation of the ionic compound, the H–N–H bond angle increases. Which statements are correct?
The diagrams show skeletal formulas of some isomers of C6H12O. O O O O Which statement is correct?
The skeletal formulas of two compounds are shown. progesterone O O testosterone OH O Which statements about progesterone and testosterone are correct?
Which intermediate ion forms in the greatest amount during the addition of HBr to propene?
Two hydrocarbons, R–CH3 and R'–CH3, react separately with bromine in the presence of ultraviolet light. One of these hydrocarbons is unsaturated. In each case, free radical substitution reactions occur. R is CH3CHC(CH3). R' is CH3CH(CH3)CH2. Which row is correct? a propagation stage for the saturated hydrocarbon a termination stage for the unsaturated hydrocarbon
The fumes from the exhausts of petrol-burning cars contain the following pollutants. unburnt hydrocarbons nitrogen dioxide carbon monoxide Which pollutants are removed by oxidation in a catalytic converter?
Compound X, C7H11ICl 2, is dissolved in ethanol and the solution mixed with warm aqueous silver nitrate. A precipitate is seen immediately. CH2Cl Cl I compound X What is the colour of this precipitate and what is the structural formula of the first organic product? colour of the precipitate structural formula of the first organic product
1,4-dibromobutane reacts with an excess of ethanolic sodium hydroxide until no further reaction takes place. What is the relative formula mass of the major organic product?
A small section of a polymer produced from two monomers is shown. –CH2–C(CH3)2–CH(CH3)–CH2– What are the two monomers?
The balanced equation for the reaction of X with an excess of acidified K2Cr2O7 is shown. X + 3[O] Y + H2O Compound Y is the only organic product of the reaction. Which compound is X? HO
Three mixtures are heated under reflux. Which mixtures will produce sodium propanoate as one product? CH3CH2CHO + NaBH4(aq) CH3CH2CH2OH + Na(s) CH3CH2CN + NaOH(aq)
Which compound is a product of the hydrolysis of CH3CO2CH2C2H5 using aqueous sodium hydroxide?
Compound Q reacts when heated with HCN in the presence of a catalyst to produce compound R. Molecules of compound R each contain four carbon atoms. What is compound Q? O
The table shows the reagents and products of three reactions. reagents products ethanoic acid + Na2CO3 CH3CO2Na + H2O + CO2 ethanoic acid + Mg (CH3CO2)2Mg + H2O ethanoic acid + CH3OH CH3CO2CH3 + H2O Which rows are correct?
Seven aldehydes and ketones ● contain only one oxygen atom per molecule ● have four or fewer carbon atoms in their structures. Alkaline I2(aq) is added to each of these carbonyl compounds separately. How many of these carbonyl compounds produce a yellow precipitate with alkaline I2(aq)?
Some properties of compound X are listed. ● 1.0 mol X reacts with exactly 8.5 mol oxygen when completely combusted. ● X does not react when heated with acidified KMnO4. What are the possible identities of X? OH HO OH O
A sample of magnesium contains the isotopes 24Mg, 25Mg and 26Mg only. The percentage abundance of 25Mg and 26Mg is the same. The relative atomic mass of magnesium in the sample is 24.3. What is the percentage abundance of 24Mg?