下列离子方程式中错误的是（　　）

A、<img src="//wximg.233.com/attached/image/20130109/20130109154474787478.jpg" alt="" border="0" />
B、<img src="//wximg.233.com/attached/image/20130109/20130109154438763876.jpg" alt="" border="0" />
C、<img src="//wximg.233.com/attached/image/20130109/20130109154454115411.jpg" alt="" border="0" />
D、<img src="//wximg.233.com/attached/image/20130109/20130109154439133913.jpg" alt="" border="0" />