Consider a reaction which is 1st order with respect to A and 1st order with respect to B.
What happens to the reaction rate if the concentration of A is doubled and the concentration of B is doubled?
The reaction rate is quadrupled
The reaction rate does not change
The reaction rate is doubled
cannot be determined without the rate constant
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Answer: The reaction rate is quadrupled
r1 = k[A] [B] in firsr order reaction
r2 = k[2A] [2B]
r2 = 4 r1 ( reaction rate of r2 is quadrupled of reaction rate one)
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