lodine is made by reacting bromine with sodium iodide. (i) Construct an ionic equation for the reaction of bromine with sodium iodide. ................................................................................................................................. (ii) State the role of bromine in the reaction. Explain your answer. ....................................................................................................................................... . .................................................................................................................................

Chemistry

IGCSE&ALevel

CAIE

Exam No：9701_s24_qp_21 Year：2024 Question No：1(c)

Answer:

6.1.1 calculate oxidation numbers of elements in compounds and ions

6.1.2 use changes in oxidation numbers to help balance chemical equations

6.1.3 explain and use the terms redox, oxidation, reduction and disproportionation in terms of electron transfer and changes in oxidation number

6.1.4 explain and use the terms oxidising agent and reducing agent

6.1.5 use a Roman numeral to indicate the magnitude of the oxidation number of an element