AP Chemistryeasymcq1 pt
How is the average rate of a reaction expressed?
A.Change in concentration divided by change in time
B.Change in temperature divided by time
C.Total product formed
D.Change in mass per gram
Explanation
Core Concept
Rate = Δ[reactant or product]/Δt. Concentration change over a time interval gives the average rate; instantaneous rate takes the slope of the concentration–time curve at one point.
Correct Answer
AChange in concentration divided by change in time
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