This is a bit complex to answer as we have HCl and NaOH present, they will undergo neutralization reaction to form NaCl and water. so inevitably water is also in system. acetyl chloride and water, they will react to form HCl and Acetic acid which is will react with NaOH to form sodium acetate. Considering all these cases. I think the answer should be benzene in CH2Cl2 layer, as benzene only acetyl chloride in NaOH layer as CH3COO-Na+ AlCl3 will be NaOH layer in the form of AlCl4- ion, reason being NaOH and HCl have reacted to give Na+ and Cl- ions and AlCl3 in presence of chloride ions gives AlCl4- HCl will be in NaOH in form of NaCl ... dissociated into Na+ and Cl- ions ultimately Solution This is a bit complex to answer as we have HCl and NaOH present, they will undergo neutralization reaction to form NaCl and water. so inevitably water is also in system. acetyl chloride and water, they will react to form HCl and Acetic acid which is will react with NaOH to form sodium acetate. Considering all these cases. I think the answer should be benzene in CH2Cl2 layer, as benzene only acetyl chloride in NaOH layer as CH3COO-Na+ AlCl3 will be NaOH layer in the form of AlCl4- ion, reason being NaOH and HCl have reacted to give Na+ and Cl- ions and AlCl3 in presence of chloride ions gives AlCl4- HCl will be in NaOH in form of NaCl ... dissociated into Na+ and Cl- ions ultimately.