The same quality of copper and zinc rod connected by wires inserted into the CuSO4 solution, after a period of time, washed out, drying, weighing, two for the poor quality of electronic material through 12.9g. wire in the amount? More details, please
Due to a loss of electrons into ions, an electron into copper, reduce a quality, an increase is 12.9 grams. According to electronic conservation, and zinc and copper ions are two valence electron, so the loss of zinc and copper are the number of moles of electrons and zinc and is the same. The relative molar mass of copper and 129, so the number of moles of =12.9/129=0.1 then transferred electron number is 0.1X2=0.2
According to electronic conservation, and zinc and copper ions are two valence electron, so the loss of zinc and copper are the number of moles of electrons and zinc are the same. And the relative molar mass of copper and 129, so the number of moles of =12.9/129=0.1. then transferred electron number is 0.1X2=0.2
1. because of the copper zinc ions in copper sulfate to replace a copper, and because of their lost electrons into zinc ions, so the copper zinc bar. The quality of quality is greater than2 due to a loss of electrons into ions, an electron into copper, reduce a quality, an increase is 12.9 grams.
