下列表示对应化学反应的离子方程式正确的是
A．NaHCO3水解：HCO3－ + H2O CO32－ + H3O+ |
B．用石墨作电极电解氯化镁溶液：2Cl－ + 2H2O 2OH－ + H2↑+ Cl2↑ |
C．乙醛与新制的Cu(OH）2悬浊液加热：CH3CHO + 2Cu(OH）2 + OH－ CH3COO－ + Cu2O↓+ 3H2O |
| D．NaAlO2溶液中通入少量二氧化碳：AlO2－ + CO2 + 2H2O＝Al(OH）3↓+ HCO3－ |
相关试题
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A．other | B．others | C．one | D．ones ks |
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A．continued | B．immediate | C．careful | D．general |
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