A、应用范围广 B、K<sub>2sub>Cr<sub>2sub>O<sub>7sub>溶液稳定 C、K<sub>2sub>Cr<sub>2sub>O<sub>7sub>无公害 D、K<sub>2sub>Cr<sub>2sub>O<sub>7sub>易于提纯 E、在稀盐酸溶液中,不受Cl-影响
A、应用范围广 B、K<sub>2sub>Cr<sub>2sub>O<sub>7sub>溶液稳定 C、K<sub>2sub>Cr<sub>2sub>O<sub>7sub>无公害 D、K<sub>2sub>Cr<sub>2sub>O<sub>7sub>易于提纯 E、在稀盐酸溶液中,不受Cl-影响
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、K<sub>2sub>Cr<sub>2sub>O<sub>7sub> B、HCl C、KIO<sub>3sub> D、Na<sub>2sub>B<sub>4sub>O<sub>7sub>·10H<sub>2sub>O
A、[Cr(NH<sub>3sub>)<sub>4sub>(H<sub>2sub>O)<sub>2sub>]Cl<sub>3sub> B、[Cr(NH<sub>3sub>)<sub>4sub>Cl<sub>2sub>]Cl C、[Cr(NH<sub>3sub>)<sub>4sub>(H<sub>2sub>O)Cl]Cl<sub>2sub> D、[Cr(NH<sub>3sub>)<sub>3sub>Cl<sub>3sub>]
A、K<sub>2sub>Cr<sub>2sub>O<sub>7sub> B、Na<sub>2sub>S<sub>2sub>O<sub>3sub> C、Zn D、H<sub>2sub>C<sub>2sub>O<sub>4sub>·2H<sub>2sub>O
A、[Cr(NH<sub>3sub>)<sub>4sub>(H<sub>2sub>O)<sub>2sub>]Cl<sub>3sub> B、[Cr(NH<sub>3sub>)<sub>4sub>Cl<sub>2sub>]Cl C、[Cr(NH<sub>3sub>)<sub>4sub>(H<sub>2sub>O)Cl]Cl<sub>2sub> D、[Cr(NH<sub>3sub>)<sub>3sub>Cl<sub>3sub>]
A、K<sub>2sub>Cr<sub>2sub>O<sub>7sub> B、Na<sub>2sub>S<sub>2sub>O<sub>3sub> C、I<sub>2sub> D、KMnO<sub>4sub>
A、KMnO<sub>4sub> B、K<sub>2sub>Cr<sub>2sub>O<sub>7sub> C、Na<sub>2sub>S<sub>2sub>O<sub>3sub> D、NH<sub>4sub>SCN