In: Chemistry
9.) Which of the following titrations results in an acidic solution at the equivalent point?
a.) acetic acid titrated w/ NaOH
b.) hydrochloric acid titrated w/ KOH c.) C5H5N titrated w/
HBr
d.) NaOH titrated w/ nitric acid
10.) Which combination of solutions is the BEST choice for making a buffer solution?
a.) equal volumes of 1 M ammonia and 0.001 M ammonium chloride.
b.) equal volumes of 0.5 M HCl and 0.5 M NaOH.
c.) equal volumes of 0.5 M HCl and 0.5 M NaCl.
d.) equal volumes of 2 M ammonia and 1 M HCl.
e.) equal volumes of 2 M ammonium chloride and 1 M HCl.
11.) Glycolic acid which is a monoprotic acid and a constituent in sugar cane has a pKa of 3.90. A 25.0 mL solution of glycolic acid is titrated to the equivalence point with 35.8 mL of 0.020 M NaOH (aq). What is the pH of the resulting solution at the equivalence point?