高效能电池的研发制约电动汽车的推广。有一种新型的燃料电池，它以多孔镍板为电极插入KOH溶液中，然后分别向两极通入乙烷和氧气，其总反应式为
2C2H6+7O2+8KOH
4K2CO3+10H2O，有关此电池的推断正确的是
A．负极反应为：14H2O+7O2+28e－28OH－
B．放电过程中KOH的物质的量浓度不变．
C．放电一段时间后，负极周围的pH升高
D每消耗1molC2H6，则电路上转移的电子为14mol
相关试题
—— Do you mind my opening the window? It’s a bit hot in here.
—— ______ , as a matter of fact
| A．Go ahead | B．Yes, my pleasure |
C．Yes, I do | D．Come on |
It’s high time you had your hair cut ; it’s getting _______ . 
| A．too much long | B．much too long |
C．long too much | D．too long much |
My friend showed me round the town, ______ was very kind of him. 
| A．which | B．that | C．where | D．it |
They use computers to keep the traffic _______ smoothly.
| A．being run | B．run | C．to run | D．running |
粤公网安备 44130202000953号