A.②③ | B.② | C.②④ | D.①④ |
A.①②③④⑤ | B.①②③⑤ | C.②③④ | D.④⑤ |
A.X=Y+0.0l | B.X="2Y" | C.Y="2X" | D.X=Y+0.02 |
A.pH=12的溶液 |
B.c(H+)=1×10—13mol/L 的溶液 |
C.c(OH-):c(H+)=1010的溶液 |
D.c(OH-)=0.2mol/L的氨水 |
A.NaCl | B.(NH4)2SO4 | C.H2SO4 | D.Ba(OH)2 |
A.①③⑤ | B.①②③ | C.②④ | D.①③④⑤ |
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