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Label the following reactions as El or E2. Br A + + A) A = E1; B=E2 B) A = E1; B=E1 Alkynes can be synthesized via elimination of which alkyl halide? O geminal dihalide O vicinal dihalide O both A and B O tetrahalide Br OC(CH3)3 CH3OH C) A = E2; B=E1 D)A = E2; B=E2 Predict the product/s of the following reaction CI NaOEt & & & & B. D. The structure of compound A is indicated below, followed by four statements. Decide which statement is true about A. A. O A) A will react with Na+ -OC(CH3) to form an ether by nucleophilic substitution. O B) A will usually show second-order kinetics in a substitution reaction when treated with a number of different nucleophiles. OC) A will react with CH3OH to give a mixture of products derived from E1 and SN1 reactions. OD) The rate of reaction of A will increase as the strength of the nucleophile increases. O E) The reaction coordinate diagram for a typical substitution reaction with A shows one transition state.