DP Chemistry (last assessment 2024)

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Question 18N.2.sl.TZ0.3d.i

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.2.sl.TZ0.3d.i
Level sl Paper 2 Time zone TZ0
Command term Deduce Question number d.i Adapted from N/A
d.i.
[Maximum mark: 2]
18N.2.sl.TZ0.3d.i

Bromine can form the bromate(V) ion, BrO3−.

(d.i)

Bromate(V) ions act as oxidizing agents in acidic conditions to form bromide ions.

Deduce the half-equation for this reduction reaction.

[2]

Markscheme

BrO3− (aq) + 6e− + 6H+ (aq) → Br− (aq) + 3H2O (l)

correct reactants and products ✔

balanced equation ✔

 

Accept reversible arrows.

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