Chem 112 Pre-Lab Quiz 4

In this experiment, when plotting ln k v 1/T, the temperature should be in units of:

Kelvin

In the Arrhenius equation, k is:

the rate constant

If the temperature should change during the course of the reaction you should:

take the average temperature over the course of the reaction as the reaction temperature

The speed of a chemical reaction is generally not affected by:

the molar mass of the reactants

In order to reach thermal equilibrium, the reactants should be placed in the water bath for ____ minutes prior to mixing

5

Breaking a bond:

requires energy

In general for every 10oC increase in reaction temperature, the reaction rate:

doubles

The procedure calls for placing ___mL of H2C2O4 in an Erlenmeyer flask?

20

In the Arrhenius equation, Ea is?

the activation energy

A temperature increase generally

speeds up a chemical reaction

The activation energy is determined in this experiment by plotting:

ln k v 1/T (T in K)

The ~temperature difference in each of the determinations is ___ degrees C

10

Activation energy is measured in:

kJ or J

The slope of a plot of ln k versus 1/T (T in Kelvin) is equal to:

-Ea/R

The final volume of each reaction solution is ___mL

30

The purpose of this experiment is to:

determine the activation energy

We are looking to determine k at ___ different temperatures in this experiment

4