A.①③ | B.①② | C.③④ | D.①④ |
A.1:1 | B.3:4 | C.9:8 | D.4:3 |
A.无水氯化镁的制备:MgCl2·6H2O MgCl2+6H2O |
B.钴的制备:3Co3O4+8Al9Co+4Al2O3 |
C.烧碱的制备:2NaCl+2H2O2NaOH +H2↑+ Cl2↑ |
D.漂粉精的制备: 2Ca(OH)2 + 2Cl2→Ca(ClO)2+CaCl2+2H2O |
A.1∶1 | B.2∶1 | C.3∶2 | D.1∶2 |
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