What substance was produced in reaction bet. Cl watr & KI w/c was confrmd by its reaction with starch?
Answer:
This is a displacement reaction.
You need to know the reactivity series, will chlorine displace iodine producing the salt potassium chloride?
The short answer is yes, chlorine is above iodine in the reactivity series, the solution will darken due to iodine being released:
Cl2 (aq) + 2 KI (aq) = 2 KCl (aq) + I2 (aq)
You should already know that iodine reacts with starch to turn dark blue.
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