Reactions of the halogens
3 marks · EasyThis question is about halogen reactions.
Describe what happens when chlorine reacts with sodium metal.
Name the compound formed in this reaction.
Explain why sodium reacts with chlorine instead of iodine in terms of halogen reactivity.
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(a) Sodium burns/reacts with chlorine producing a bright yellow flame (or forms a white solid).
(b) Sodium chloride
(c) Chlorine is more reactive than iodine so reacts more readily with sodium.
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Marking points
B1 (a) · 1 mark · Describes correct observation for sodium and chlorine (e.g. bright yellow flame, white solid formed).
B1 (b) · 1 mark · Names sodium chloride as the product.
B1 (c) · 1 mark · Correctly explains that chlorine is more reactive than iodine.
Worked solution
a) Sodium reacts rapidly with chlorine, producing a bright yellow flame and a white solid.
b) The product is sodium chloride.
c) Chlorine is more reactive than iodine, so it reacts more readily with sodium than iodine would.