Which statement correctly describes an electrode in a voltaic cell of copper and hydrogen?
-Copper atoms become copper ions at the anode because the SRP is more positive.
-Hydrogen ions become diatomic hydrogen at the cathode because hydrogen is always reduced in a voltaic cell.
-Copper ions become copper atoms at the cathode because copper is always reduced in a voltaic cell.
-Diatomic hydrogen becomes hydrogen ions at the anode because the SRP is more negative.