Which equation would you use to calculate the rate of a reaction?

When ethyl bromide is added to potassium tert-butoxide, the product is ethyl tert-butyl ether.

CH₃CH₂–Br + (CH₃)₃C–O^–K⁺ → (CH₃)₃C–O–CH₂CH₃ ethyl bromide potassium tert-butoxide ethyl tert-butyl ether

a. What happens to the reaction rate if the concentration of ethyl bromide is doubled?

When ethyl bromide is added to potassium tert-butoxide, the product is ethyl tert-butyl ether.

CH₃CH₂–Br + (CH₃)₃C–O^–K⁺ → (CH₃)₃C–O–CH₂CH₃ ethyl bromide potassium tert-butoxide ethyl tert-butyl ether

b. What happens to the rate if the concentration of potassium tert-butoxide is tripled and the concentration of ethyl ­bromide is doubled?

c. What happens to the rate if the temperature is raised?

Draw a reaction coordinate diagram for a one step reaction that has the following values of E_a and ∆H. (a) E_a = 9 kcal/mol ; ∆H° = + 4 kcal/mol

The bond angles in a regular polygon with n sides are equal to 180° - 360°/n

a. What are the bond angles in a regular octagon?

b. What are the bond angles in a regular nonagon?