Zn times s plus 2 cap h raised to the plus A q power rightarrow Zn raised to the 2 plus power times A q plus cap h sub 2 of g has an overall reduction potential of 0 point 7 6 cap v Therefore,
Answer
A
the reaction is not spontaneous and will require energy to proceed.
B
the forward and reverse reactions are each spontaneous.
C
the reaction is spontaneous and will proceed without any energy input.
D
the reduction potentials cancel out and prevent any reaction.
Explanation
The reaction is Zn(s) + 2H⁺(aq) → Zn²⁺(aq) + H₂(g), and its overall cell potential is +0.76 V. A positive cell potential means ΔG = −nFE is negative, so the forward reaction is spontaneous and does not need energy input. The correct choice is “the reaction is spontaneous and will proceed without any energy input.”
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