When a strip of zn is placed in a beaker containing 0.1 m hcl, h2(g) evolves. if a strip of al is placed in a beaker containing 0.1 m hcl, does h2(g) evolve? a. yes; al is reduced and h+(aq) is oxidized. b. yes; al is oxidized and h+(aq) is reduced. c. no; al is reduced and cl-(aq) is oxidized d. no; al is oxidized and h2o(l) is produced. solution: the correct answer is b. this is a general chemistry question that falls under the content category “electrochemistry and electrical circuits and their elements.” the answer to this question is b. since a new solid forms when al(s) is mixed with zn2+(aq), it is reasonable to assume that al(s) is more susceptible to oxidation than zn(s). it is a scientific reasoning and problem solving question because you are asked to bring together theory and observations to draw a conclusion.