IGCSE Chemistry (0620) — 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 (atom or ion; number of protons; number of electrons; number of neutrons): atom or ion protons electrons neutrons ------ ------ ------ ------ ³⁷₁₇Cl⁻ 17 ⁶³₂₉Cu⁺…
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) (HI colourless gas, I2 purple gas, H2 colourless gas) 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, with air blown in near the base, slag and substance A leaving near the bottom, and…
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. [Ar: C =…
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