实验室可用下列方法制取氯气：
MnO2+4HCl
MnCl2+Cl2↑+2H2O
2KMnO4+16HCl
2KCl+2MnCl2+5Cl2↑+8H2O
KClO3+6HClKCl+3Cl2↑+3H2O
NaClO+2HClNaCl+Cl2↑+H2O
Ca(ClO)2+4HClCaCl2+2Cl2↑+2H2O
若制取Cl2的质量相同，则转移电子的物质的量之比为（）
A．1∶ ∶1∶∶1 |
B．2∶ ∶3∶1∶ |
| C．1∶1∶1∶1∶1 | D．2∶2∶ ∶1∶1 |
相关试题
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| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
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