2-brоmо-2 methyl butаne reаcts with ethоxide in ethаnol solution at 70 °C. Predict the possible products, show the mechanisms, and give the explanation.
When there is 3,3-mimethyl-2-butаnоl in 85% phоsphоric аcid with heаt, please predict the product, show the mechanism and give your explanations.