在理论上不能用于设计原电池的化学反应是 ( )
A.HCl ( aq ) + NaOH ( aq )
= NaCl ( aq ) + H2O ( l ) △H < 0
B.2CH3OH ( l )
+3O2 ( g ) = 2CO2 ( g ) + 4H2O ( l )
△H < 0
C.4Fe (OH)2 ( s
) + 2H2O ( l ) + O2 ( g ) = 4Fe (OH)3( s )
△H < 0
D.2H2 ( g ) + O2
( g ) = 2H2O ( l )
△H < 0