JEE Main & Advanced
Chemistry
Electrochemistry / विद्युत् रसायन
Question Bank
Electrode potential Ecell Nernst equation and ECS
question_answer
Aluminium displaces hydrogen from acids but copper does not. A galvanic cell prepared by combining \[Cu/C{{u}^{2+}}\]and \[Al/A{{l}^{3+}}\]has an e.m.f. of 2.0 V at 298 K. If the potential of copper electrode is + 0.34 V, that of aluminium is [CPMT 2001; KCET 2001]