A、S+O<sub>2sub>→SO B、S+O<sub>2sub>→SO<sub>2sub> C、S+O<sub>1sub>→SO<sub>2sub> D、S+O<sub>2sub>→SO<sub>3sub>
A、S+O<sub>2sub>→SO B、S+O<sub>2sub>→SO<sub>2sub> C、S+O<sub>1sub>→SO<sub>2sub> D、S+O<sub>2sub>→SO<sub>3sub>
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、CO<sub>2sub>+H<sub>2sub>S→CS<sub>2sub>+2H<sub>2sub>O B、CO<sub>2sub>+2S→CS<sub>2sub>+O<sub>2sub> C、CO<sub>2sub>+2H<sub>2sub>S→CS<sub>2sub>+H<sub>2sub>O D、CO<sub>2sub>+2H<sub>2sub>S→CS<sub>2sub>+2H<sub>2sub>O
A、H<sub>2sub>O(l)  H<sub>2sub>O(g)  H<sub>2sub>O(s) B、Cl<sub>2sub>(l)   Br<sub>2sub> (l)   I<sub>2sub>(s) C、Na(s)   NaCl(s)  CaCl<sub>2sub>(s) D、O<sub>3sub>(g)   O<sub>2sub>(g)    O(g)
A、Ag<sub>2sub>O(s) = 2Ag(s) + 1/2O<sub>2sub>(g) B、N<sub>2sub>O<sub>4sub>(g) = 2NO<sub>2sub>(g) C、Fe<sub>2sub>O<sub>3sub>(s) +3/2C(s) = 2Fe(s) +1/2CO<sub>2sub>(g) D、6C(s) + 6H<sub>2sub>O(g) = C<sub>6sub>H<sub>12sub>O<sub>6sub>(s)
A、CS<sub>2sub>+H<sub>2sub>O→COS+H<sub>2sub>S B、CS<sub>2sub>+2H<sub>2sub>O→CO<sub>2sub>+2H<sub>2sub>S C、CS<sub>2sub>+H<sub>2sub>O→CO+H<sub>2sub>S D、2CS<sub>2sub>+H<sub>2sub>O→2COS+<sub>2sub>
A、Na<sub>2sub>S<sub>2sub>O<sub>3sub>滴定液可用直接法配制 B、配制时应加入少许Na<sub>2sub>C<sub>2sub>O<sub>3sub> C、配制时应用新沸的冷纯化水溶解和稀释 D、配制好的Na<sub>2sub>S<sub>2sub>O<sub>3sub>溶液应及时标定,以免浓度改变 E、应用棕色瓶保存Na<sub>2sub>S<sub>2sub>O<sub>3sub>溶液,因为日光能促使Na<sub>2sub>S<sub>2sub>O<sub>3sub>分解
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、H<sub>2sub>S<sub>2sub>O<sub>6sub> B、H<sub>2sub>SO<sub>4sub> C、H<sub>2sub>SO<sub>3sub> D、H<sub>2sub>S<sub>2sub>O<sub>7sub>
A、S和H<sub>2sub>O B、S和SO<sub>2sub> C、SO<sub>2sub>和H<sub>2sub>O D、S和SO