A、稀H<sub>2sub>SO<sub>4sub> B、稀NH<sub>4sub>Cl C、冷水 D、乙醇
A、NaOH B、浓NH<sub>3sub>·H<sub>2sub>O C、NH<sub>4sub>Cl+NH<sub>3sub> D、稀NH<sub>3sub>·H<sub>2sub>O
A、CaSO<sub>4sub>、CaCO<sub>3sub> B、BaSO<sub>4sub>、Agcl C、NaOH、Ca(OH)<sub>2sub> D、NaOH、CaCO<sub>3sub>
A、K<sub>2sub>CrO<sub>4sub> B、K<sub>2sub>Cr<sub>2sub>O<sub>7sub> C、NH<sub>4sub>Fe(SO<sub>4sub>)<sub>2sub> D、荧光黄
A、HCl与CuSO<sub>4sub> B、HCl与CdCl<sub>2sub> C、CuCl<sub>2sub>与CuSO<sub>4sub> D、H<sub>2sub>SO<sub>4sub>与CdCl<sub>2sub>