If the concentration of a reactant in a first-order reaction is doubled, how does the reaction rate change?
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It stays the same
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It doubles
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It quadruples
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It increases by a factor of 1.5
📝 Detailed explanation
For a first-order reaction, Rate = k[A]¹. If [A] becomes 2[A], Rate becomes k(2[A]) = 2 * Rate.
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