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The rate of a chemical reaction depends on the concentrations of the reactants. let's consider the general reaction between a and b: aa+bb⇌cc+dd the dependence of the reaction rate on the concentration of each reactant is given by the equation called the rate law: rate=k[a]m[b]n where k is a proportionality constant called the rate constant. the exponent m determines the reaction order with respect to a, and n determines the reaction order with respect to b. the overall reaction order equals the sum of the exponents (m+n). for example, if m = 2 and n = 2 then rate = k[a]2 [b]2 and the overall reaction order is 2 + 2 = 4. the reaction orders are experimentally determined and usually not related to the reaction stoichiometric coefficients a and b. the reaction of ethyl bromide with sodium hydroxide, ch3ch2br(aq) + naoh(aq) ch3ch2 oh(aq) + nabr(aq) is first order in ch3ch2br and first order in naoh . if the concentration of ch3ch2br was increased by half and the concentration of naoh was quadrupled, by what factor would the reaction rate increase? express your answer numerically.
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