A solution is prepared by dissolving 0.0030 moles of Cu(NO3)2 in 500 mL of distilled

water. Calculate the pH of this solution. (Ka (Cu(H2O)4 2+) = 1.0 � 10�8)

I have tried everything. I keep getting ~5.4. My textbook says the answer is 5.11. This seems like a significant difference. Please only respond if you are sure you can correctly solve this problem so that the solution is 5.11.