Answer Happy

Please help and explain in great detail the following questions.
Thank you in advance!!
06. What is the approximate pH of a 0.01 M solution of acetic acid and 0.1 M Sodium acetate (pKa of acetic acid is 4.3)? 07. List three diseases that are related to problems in protein folding. 08. At neutral pH, the net charges of Glu and Lys side chains are X and Y, respectively. 09. Why 2-mercaptoethanol or DTT is added to buffer solutions? 10. How the physiological changes cause during exercises improve the oxygen delivery by hemoglobin (Hb).