a second- order reaction of the type a + b --> p was carried out in a solution that was initially 0.075 mol dm^-3 in a and 0.050 mol dm^-3 in b. after 1.0 h the concentration of a had fallen to 0.020 mol dm^-3. a) calculate the rate constant. b) solve for the half- life of each of the reactants.
hint: answers are a) 16.2 dm^3/mol*h
b) 5.1 × 10^3 s, 2.1 × 10^3 s
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