K-1 Basics of Kinetics Flashcards
Will the following increase, decrease, or have no impact on the rate of reaction?
increase the temperature of the reaction
increase the rate
Will the following increase, decrease, or have no impact on the rate of reaction?
increase the molar concentration of the reactants
increase the rate
Will the following increase, decrease, or have no impact on the rate of reaction?
Increase the surface area of a solid
increase the rate
Will the following increase, decrease, or have no impact on the rate of reaction?
Reduce the temperature of a reaction
decrease the rate
Will the following increase, decrease, or have no impact on the rate of reaction?
Add a catalyst to a reaction
increase the rate
Will the following increase, decrease, or have no impact on the rate of reaction?
increase the molar concentration of all reactants
increase the rate
Will the following increase, decrease, or have no impact on the rate of reaction?
Decrease the concentration of all reactants
decrease the rate
Will the following increase, decrease, or have no impact on the rate of reaction?
Decrease the partial pressure of a particluar gaseous reactant
decrease the rate
Will the following increase, decrease, or have no impact on the rate of reaction?
Decrease the partial pressure of a particluar gaseous reactant
decrease the rate
Will the following increase, decrease, or have no impact on the rate of reaction?
A 5 gram piece of zinc metal is digested in 10 mL of 1 M hydrochloric acid (HCl). The reaction produces hydrogen gas. What happens to the rate of the reaction if I use 10 mL of 2 M HCl?
increase the rate of hydrogen gas production
Will the following increase, decrease, or have no impact on the rate of reaction?
A 5 gram piece of zinc metal is digested in 10 mL of 1 M hydrochloric acid (HCl). The reaction produces hydrogen gas. What happens to the rate of the reaction if I use 20 mL of 1 M HCl?
No change in the rate of hydrogen gas production since there is no change in the concentration of the HCl.
Will the following increase, decrease, or have no impact on the rate of reaction?
A 5 gram piece of zinc metal is digested in 10 mL of 1 M hydrochloric acid (HCl). The reaction produces hydrogen gas. What happens to the rate of the reaction if I use a 10 gram piece of zinc metal 10 mL of 1 M HCl?
No change in the rate of hydrogen gas production since zinc is a solid and does not have a concentration. Note: There could be a small change in surface area that could have an impact but it would be minor.
Will the following increase, decrease, or have no impact on the rate of reaction?
A 5 gram piece of zinc metal is digested in 10 mL of 1 M hydrochloric acid (HCl). The reaction produces hydrogen gas. What happens to the rate of the reaction if I use 10 grams of powdered zinc in 10 mL of 1 M HCl?
Increase in the rate of hydrogen gas production due to an increase in surface area.
Will the following increase, decrease, or have no impact on the rate of reaction?
A 5 gram piece of zinc metal is digested in 10 mL of 1 M hydrochloric acid (HCl) at room temperature. The reaction produces hydrogen gas. What happens to the rate of the reaction if I place the reaction mixture on ice?
Decrease in the rate of hydrogen gas production due to a a decrease in reaction temperature.
Will the following increase, decrease, or have no impact on the rate of reaction?
Nitrogen dioxide gas is added to a flask until a pressure of 1 atm is achieved. A small amount of granular platinum is added to flask. The platinum is not consumed in the reaction.
2 NO2 (g) ⇒ N2 (g) + 2 O2 (g)
Increase in the rate of nitrogen gas production due to the addition of the platinum catalyst.
List 4 things that will increase the rate of consumption of the acetone (C3H6O)
C3H6O (l) + 4 O2 (g) ⇒ 3 CO2 (g) + 3 H2O (g)
- increase the pressure of the oxygen gas
- atomize the liquid C3H6O (make it a fine spray)
- raise the temperature of the reaction
- find and add a catalyst
What do you need to measure in order to determine the rate of a reaction?
- Change in concentration of a reactant or a product.
- Amount of time needed to achieve that change.
Write a rate expression for the consumption of oxygen
C3H6O (l) + 4 O2 (g) ⇒ 3 CO2 (g) + 3 H2O (g)
Write a rate expression for the production of carbon dioxide.
C3H6O (l) + 4 O2 (g) ⇒ 3 CO2 (g) + 3 H2O (g)
Write a rate expression for the production of water.
C3H6O (l) + 4 O2 (g) ⇒ 3 CO2 (g) + 3 H2O (g)
Which of the following distrubutions represents the gas with the greatest temperature?
T2
Which of the following distrubutions represents the gas with the greatest number of particles?
They are the same since they have the same area under the curve (approximately)
Which of the following distributions represents the gas with the lower pressure?
Substance 2
Which of the following distributions represents the gas with the lower temperature?
Neither since both have about the same average KE - just past the midpoint of the peak.
