Question 096 Propose a three-step synthetic sequence to accomplish the transformation below. 1) HBr, ROOR; 2) t-BuOK; 3) CH3CH2CCNa 1) NaOEt; 2) HBr, ROOR; 3) CH3CH2CCNa 1) t-BuOK; 2) NaNH2; 3) CH3CH2CCNa 1) CH3CH2CH2CH2Br; 2) NaOEt; 3) HBr, ROOR 1) t-BuOK; 2) HBr, ROOR; 3) CH3CH2CCNa 1) NaOEt; 2) NBS, hν; 3) NaSBu

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.