A galvanic cell between Zinc (reduction potential = - 0.76 v) and Aluminum (emf= - 1.66 v) in will show a current duo to oxidation of and reduction of : The number of electrons lost by each atom during oxidation is and gained in reduction is : The voltage under standard conditions (1M) and 25C is . If the Aluminum ion concentration is reduced by half while the zinc ion concentration remains the same the voltage will (increase/decrease)