Carboxylic acid 7 ph & auto-ionization 8. Significant figures in ph values 11 (cid:1837)(cid:1853) values for polyprotic acids 10 (cid:1837)(cid:1853) and (cid:1868)(cid:1837)(cid:1853) 12. Acid base reactions of salts 15. Lewis acids & bases and buffers 18. Selecting an appropriate conjugate acid-base pair 19. Buffers 22 ph change on addition of acid or base to buffer 22. Titration of a strong acid with a string base 24. Calculating ph when titrating a strong acid with a strong base 26. Effect of acid strength on titration curve 27. Strong acid strong base buffers and titrations 29. Calculating the ph of a buffer solution after adding strong base (or strong acid) 29. Reactions of buffers (strong acid or strong base) 29. Weak base weak acid titrations 31. Binary acid: acids that contains just hydrogen and one other element. broken and both electrons from the bond must remain with the a atom.