Question

Amount of copper and zinc in sulphuric acid to make voltaic cell

Answer 1

here, zinc is an electron donor and copper is the electron acceptor, since

First of all, these voltages seem backwards. You've written zinc oxidizing as being a non-spontaneous reaction, but it actually is spontaneous. You've written copper oxidizing as being spontaneous, but it's non spontaneous.

Secondly, when you say the copper is the electron acceptor, are you saying the copper is the oxidizer? The way I see it, the acid is the oxidizer (+0.17V to reduce), the zinc is the reducer (+0.76V to oxidize), and the copper just happens to be there. IMO, the copper could be replaced with carbon, silver, gold, or platinum and the reaction would go exactly the same