Better Students Ask More Questions.
Calculate the number of moles of electrons required to deposit 6.35 g of copper on a...
1 Answer | add yours
High School Teacher
To solve this type of problem, first determine the number of moles of copper produced.
moles = mass/elemental mass = 6.35/63.5 = 0.1 moles
Now write the reaction taking place, and assume you have a copper +2 ion in solution.
Cu^+2 + 2 e^-1 = Cu
This means that it takes two moles of electrons for every mole of copper that has been reduced.
Since you produced 0.1 moles of copper, you had to use 0.2 moles of electrons.
Posted by ndnordic on February 7, 2011 at 3:05 AM (Answer #1)
Join to answer this question
Join a community of thousands of dedicated teachers and students.