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1. A 1.2 molar solution A has a rate constant of 3.4 L/ mol*s. Determine its half-life if its rate law is second-order.
.24 .245 4.08 4.1 1.0

2. After 5.0 minutes a .50 molar solution is left. Find the reaction rate if the initial amount of the solution was 1.0 molar.
0.10 mol/L*s 0.10 mol/L*min. 5.0 mol/L*s 5.0 mol/mL*min 2.0 mol/L*min

3. First-order reaction A has a half-life of 5.0 days. Find its rate constant.
.14 .13 3.4 7.2 3.3

4. The energy needed to overcome for a reaction to occur is called:
activation energy energy of vaporization specific heat potential energy kinetic energy

5. For a 2nd order reaction, if the concentration is doubled, the reaction rate will:
triple quadruple stay the same double none of the above

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