Only answer all parts from question 2

Applying the lecture concepts: 1. A 1-L solution contains 100 mg/L copper sulfide (molecular weight = 97.6 g/mol). a. Write the balanced equation for Cu(OH)2 + Cut? + OH b. What is the Cu(OH)2 concentration in ppm? c. What is the Cu(OH)2 concentration in molarity? d. What is the Cu(OH)2 concentration in normality? (Hint: Consult page 223 of the Davis textbook for the value of n.) 2. A solution contains 0.05 M hydrobromic acid (HBr). The equilibrium constant is pK, = -8.7. What is the K? (Hint: See equation 5-34 on page 230 in the Davis textbook.) a b. Why is this a strong acid? (Hint: Consult the chemistry flowchart in the lecture slides.) C. As a strong acid, we can assume that the HBr completely dissociates into H and Br and we do not need to consider the K. What is the pH of the solution at equilibrium? CS Scanned with CamScanner