AP Chemistrymediummcq1 pt
A reaction follows rate = k[A][B]. In one experiment [A] is doubled and [B] is tripled simultaneously. By what factor does the rate change?
A.6
B.5
C.12
D.1
Explanation
Core Concept
First order in each reactant means the factors apply independently and multiply. Doubling [A] contributes a factor of 2, and tripling [B] contributes 3. Together the rate rises by 2 x 3 = 6. Multi-reactant problems reduce to applying each exponent to its own concentration change and multiplying the results.
Correct Answer
A6
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