Catalyst affecting reaction rate Flashcards
How does a catalyst increase the rate of reaction?
Speeds up the rate of a reaction by providing a lower energy pathway
Is a catalyst used up in an overall reaction?
No
What does a catalyst decrease?
Activation energy
What happens to the shaded area under the curve as the catalyst lowers the activation energy?
Curve increases
When the shaded area under the curve, what does it indicate?
More molecules in the mixture will possess sufficient energy to react providing they collide
Does the area under the curve is equal to the total number of molecules present?
Yes
If the plot starts at zero, does it show that some molecules have zero energy?
No
Does increasing the temperature increases the area under the curve?
No
Is it true when a catalyst is added to a reaction, the area under the curve to the right of the activation energy line increases and this is because the activation energy line has shifted to the left?
Yes
Does decreasing the temperature of a reaction result in the Maxwell-Boltzmann
distribution shifting to the left and the maxima increasing?
Yes
