A.固体CH3COOK | B.固体CH3COONH4 | C.NH3气体 | D.固体NaHCO3 |
A.MgO | B.MgCO3 | C.NaOH | D.Mg(OH)2 |
A.①>③>② | B.②>③>① | C.③>②>① | D.①>②>③ |
A.0.2 mol / L NaCl | B.0.1 mol / L Ba(OH)2 |
C.0.2 mol / L K2S | D.0.2 mol / L (NH4)2SO4 |
A.适量盐酸 | B.适量NaOH | C.适量KOH | D.适量KHS |
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