Displacement reactions involving solutions of salts
1 mark · EasyGive the formula of the spectator ion present when potassium metal reacts with sodium chloride solution.
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Cl^-
Also accept: chloride ion; Cl^(-)
Common mistakes: Writing K^+ or Na^+; Getting the charge wrong
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Marking points
A1 · 1 mark · Correct formula for the chloride ion (Cl^-).
Worked solution
The spectator ion is the chloride ion: Cl^-.