Question

2. Circle all of the following that change with the temperature of a reaction.

3. Draw an arrow on this graph of the Arrhenius equation that shows where you would find ln A (log of the frequency factor).

4. If the slope of the line in the graph above is -350 K, what is the value of Ea (in J/mol)?

Answer 1

Based on the effect of temperature on a reaction, a change in temperature affects the rate constant K.

Based on the Arrhenius equation, the y-intercept gives the value of ln A.

From the value of the slope, the value of Ea is 42.1 J/mol.

What is the effect of temperature on a reaction?

A change in the temperature of a reaction acts to increase the rate of reaction.

• Change in temperature has no effect on the ideal gas constant.
• Change in temperature has no effect on the activation energy.
• Change in temperature has no effect on the concentration of reactants.
• Change is temperature can either lower or increase the rate constant of a reaction.
• Change in temperature has no effect on the order of reaction.

According to the Arrhenius equation, the y-intercept gives the value of ln A.

From the graph; slope = -Ea/R

Ea = -slope/R

Where;

• Ea is activation energy
• R is molar gas constant = 8.314 J/K.mol
• Slope = -350 K

Ea = -(-350)/8.314

Ea = 42.1 J/mol

Learn more about Arrhenius equation at: https://brainly.com/question/17205915