Cambridge0620/41• Calculator Allowed

May/June 2024 Paper 41 (Theory Extended)

1:15:00

Exam Room Controls

Progress0 of 33 answered

Question Navigator

Total Marks: 80

Exam Tools & Environment

Assessment Policy:

Calculator Allowed. All official Cambridge / AP / IB grade boundaries calculated.

CAMBRIDGE ASSESSMENT INTERNATIONAL EDUCATION (CAIE)0620/41• Official Candidate Question Paper

May/June 2024 Paper 41 (Theory Extended) • IGCSE Chemistry (0620)

base

[1 Marks]

Industrial Chemistry – Contact Process

Worth 1 Marks • Foundation Level

This question references Notes for Qualitative Analysis: Tests for Anions in the reading insert.

Name the industrial process that is used to:

(a) Convert sulfur dioxide into sulfur trioxide in the manufacture of sulfuric acid:

2\text{SO}_2(g) + \text{O}_2(g) \xrightleftharpoons[450^\circ\text{C},\, 2\text{ atm}]{\text{V}_2\text{O}_5} 2\text{SO}_3(g)

Formula Guide:

Sulfur dioxide is catalytically oxidised to sulfur trioxide over a vanadium(V) oxide catalyst (V₂O₅) at 450 °C and 1–2 atmospheres in the Contact process.

Your Answer Entry

Question 1 of 33