4. Ten joules of work are required to transfer 2 coulombs of charge from X to Y. What is the difference in potential between these two points?

93.2 ml + 3920 ml = 4013 ml total  

(93.2 ml) * (2.03 m) / (4013 ml) = 0.0471 m

the volume in in l of the diluted solution would be 0.0471 m.

the correct answer is:

a. formation of precipitation