Consider a galvanic cell based on the following two half reactions at 298 k: o ξ cell fe3+ + e- æ fe2+ 0.77 v cu2+ + 2 e- æ cu 0.34 v which of the following changes will increase the potential of the cell? pick the answer that has all correct responses. 1. increasing the concentration of fe+3 ions 2. increasing the concentration of cu2+ ions 3. adding equal volumes of water to both half reactions 4. increasing the concentration of fe2+ ions 5. remove fe2+ ions from solution