A、H<sub>2sub>C<sub>2sub>O<sub>4sub> B、稀H<sub>2sub>SO<sub>4sub> C、H<sub>2sub>CO<sub>3sub> D、H<sub>3sub>PO<sub>4sub>
A、H<sub>2sub>C<sub>2sub>O<sub>4sub> B、稀H<sub>2sub>SO<sub>4sub> C、H<sub>2sub>CO<sub>3sub> D、H<sub>3sub>PO<sub>4sub>
A、NaOH溶液和FeSO<sub>4sub>溶液 B、AgNO<sub>3sub>溶液和过量的NH<sub>3sub>•H<sub>2sub>O C、Na<sub>2sub>SO<sub>3sub>溶液和酸性KMnO<sub>4sub>溶液 D、Na<sub>2sub>S溶液与稀H<sub>2sub>SO<sub>4sub>
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、K<sub>2sub>Cr<sub>2sub>O<sub>4sub>溶液 B、K<sub>2sub>CrO<sub>4sub>溶液 C、FeCl<sub>3sub>溶液 D、NH<sub>4sub>SCN溶液
A、H<sub>2sub>C<sub>2sub>O<sub>4sub> B、CO(NH)<sub>2sub>+H<sub>2sub>C<sub>2sub>O<sub>4sub> C、H<sub>2sub>SO<sub>4sub> D、H<sub>3sub>PO<sub>4sub>
A、C<sub>6sub>H<sub>5sub>-CH<sub>2sub>Cl B、CH<sub>3sub>CH=CHCH<sub>2sub>Cl C、C<sub>6sub>H<sub>5sub>–Cl D、CH<sub>2sub>=CH(CH<sub>2sub>)<sub>4sub>Cl
A、H<sub>2sub>S+1/2O<sub>2sub>=1/2S<sub>2sub>+H<sub>2sub>S B、CH<sub>4sub>+2O<sub>2sub>=CO<sub>2sub>+2H<sub>2sub>O C、2H<sub>2sub>S+3O<sub>2sub>=2SO<sub>2sub>+2H<sub>2sub>O D、COS+H<sub>2sub>O=CO<sub>2sub>+H<sub>2sub>S
A、水 B、稀H<sub>2sub>SO<sub>4sub> C、稀BaCl<sub>2sub> D、H<sub>2sub>O+NH<sub>4sub>Cl
A、[Cr(NH<sub>3sub>)<sub>4sub>(H<sub>2sub>O)<sub>2sub>]Cl<sub>3sub>        B、[Cr(NH<sub>3sub>)<sub>4sub>(H<sub>2sub>O)<sub>2sub>Cl]Cl<sub>2sub> C、[Cr(NH<sub>3sub>)<sub>4sub>(H<sub>2sub>O)CL]Cl<sub>2sub>·H<sub>2sub>O  D、[Cr(NH<sub>3sub>)<sub>4sub>Cl<sub>2sub>]Cl·2H<sub>2sub>O
A、CH<sub>2sub>=CH(CH<sub>2sub>)<sub>4sub>Cl B、CH<sub>3sub>(CH<sub>2sub>)<sub>4sub>Cl C、C<sub>6sub>H<sub>5sub>-CH<sub>2sub>CH<sub>2sub>Cl D、C<sub>6sub>H<sub>5sub>-Cl