Answer:
See explanation
Step-by-step explanation:
An SN1 reaction proceeds via a carbocation intermediate. The rate determining step of the reaction is the formation of the carbocation intermediate. Hence the rate equation depends on the concentration of alkyl halide, it is first order reaction.
For 2-bromo-2-methylbutane in ethanol, the polar solvents assists the formation of the carbocation. This carbocation may undergo SN1 reaction, E1 reaction or ether formation.
The alkene and ether are by products. Their structures are shown as required in the image attached to this answer.