A.标准状况下,\(\rm{2.24 L N_{2}}\)和\(\rm{O}\)\(\rm{{\,\!}_{2}}\)的混合气体中分子数为\(\rm{0.2N}\)\(\rm{{\,\!}_{A}}\) |
B.因为\(\rm{NH_{3}}\)易溶于水,所以可用作制冷剂 |
C.用烧碱处理含高浓度\(\rm{NH\rlap{_{4}}{^{+}}}\)的废水并回收利用氨 |
D.向碳酸氢铵溶液中加入足量石灰水:\(\rm{Ca^{2+}}\)\(\rm{+HCO}\)\(\rm{\rlap{_{3}}{^{-}}}\)\(\rm{+OH}\)\(\rm{{\,\!}^{-}}\)\(\rm{═CaCO}\)\(\rm{{\,\!}_{3}}\)\(\rm{↓+H}\)\(\rm{{\,\!}_{2}}\)\(\rm{O}\) |