Question

2964 of copper was deposited on passing a current of 0.5 ampere for 30 mins through copper sulphate solution. What is the atomic mass of copper

Answer 1

Explanation:

Weight of copper =0.2864 g

Current =0.5 ampere

Time =30 mint

Now we get

Quantity of charge passed

⇒0.5×30×60=900 coulomb

So, 900 coulomb Deposit copper =0.2864g

We know that

1 faraday=96500 coulomb

Thus,

96500 coulomb deposit copper=

900

0.2864

×96500=30.78 g

Hence, Equivalent mass of copper =30.78g