IGCSE Chemistry (0971) — May–June 2024, Paper 41
7 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Name the process that is used to convert sulfur dioxide into sulfur trioxide in the manufacture of sulfuric acid.
Answer this question and get it marked →Complete Table 2.1 to show the number of protons, electrons and neutrons in: 37/17 Cl (with 17 electrons given); 63/29 Cu+ (with 34 neutrons given); and the atom or ion with 16…
Answer this question and get it marked →This question is about the elements sodium and fluorine and the compound sodium fluoride. Sodium reacts with fluorine to form sodium fluoride. Write a symbol equation for this…
Answer this question and get it marked →Hydrogen iodide thermally decomposes into iodine and hydrogen. The reaction is reversible: 2HI(g) <- I2(g) + H2(g) (colourless, purple, colourless gases). Fig. 4.1 shows a sealed…
Answer this question and get it marked →Lead(II) bromide, PbBr2, is an insoluble salt and is made by precipitation. Name two aqueous solutions that produce a precipitate of lead(II) bromide when they are mixed.
Answer this question and get it marked →This question is about metals. Fig. 6.1 shows a blast furnace used to extract iron from its ore (air blown in, slag and molten product collected at A, waste gases at the top).…
Answer this question and get it marked →Many organic compounds contain carbon and hydrogen only. Organic compound A has the composition by mass C 82.76%, H 17.24%. Calculate the empirical formula of compound A.
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