Chemistry Practice Problems Average Rate of Reaction Practice Problems Solution: The aqueous reaction of KOH with HBr is: KOH(aq) ...

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Solution: The aqueous reaction of KOH with HBr is: KOH(aq) + HBr(aq) → KBr(aq) + H2O(l) At the start of such a reaction, the concentration of KOH(aq) is 0.275M. After 3.05 seconds the concentration is observed to be 0.0557M KOH(aq). What is the rate of the reaction?  

Problem

The aqueous reaction of KOH with HBr is:

KOH(aq) + HBr(aq) → KBr(aq) + H2O(l)

At the start of such a reaction, the concentration of KOH(aq) is 0.275M. After 3.05 seconds the concentration is observed to be 0.0557M KOH(aq).

What is the rate of the reaction?