将反应Cu+2Ag<sup>+</sup>= Cu<sup>2+</sup>+2Ag设计为原电池若<img src="https://img.ppkao.com/2019-05/caoguanchen/20190515160528861.png" />为Ag<sup>+</sup>/Ag的电极电势,则原电池电动势是()<p> 将反应Cu+2Ag<sup>+</sup>= Cu<sup>2+</sup>+2Ag设计为原电池若<img src="https://img.ppkao.com/2019-05/caoguanchen/20190515160528861.png" />为Ag<sup>+</sup>/Ag的电极电势,则原电池电动势是()</p>
A、A.
B.
C.
D.