Igcse Chemistry Past Paper May 2026

[ \text{Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g)} ]

Using your answer from (a), calculate the volume of hydrogen gas produced at RTP. (Molar volume = 24 dm³/mol) [2]

A) 6 dm³ B) 12 dm³ C) 24 dm³ D) 48 dm³ igcse chemistry past paper

Exam Board: Cambridge CIE 0620 Paper: 2 – Multiple Choice (Extended) – Extract Topic: Stoichiometry & Mole Calculations Time allowed: 15 minutes (extract) Total marks: 10 Section A: Multiple Choice Questions Question 1 What is the mass of one mole of carbon dioxide (CO₂)? (Ar: C = 12, O = 16)

A) One mole of any element contains the same number of atoms as one mole of any compound. B) One mole of any gas occupies the same volume at the same temperature and pressure. C) One mole of any substance has the same mass. D) One mole of electrons has a mass of 1 g. [ \text{Mg (s) + 2HCl (aq) → MgCl₂

A) 1.20 × 10²³ B) 3.01 × 10²³ C) 6.02 × 10²³ D) 1.20 × 10²⁴ Question 6 Magnesium reacts with hydrochloric acid according to the equation:

Which statement about the mole is correct? B) One mole of any gas occupies the

A) 1.0 mol B) 1.5 mol C) 2.0 mol D) 2.5 mol