A scientist isolates an unknown organic acid through a series of experiments and intends to determine the identity of it. He mixes 0.195 g of this acid in 200 ml of water and then titrates it with 0.1 M NaOH. If it takes 16 ml of NaOH to reach the equivalence point, what is the likely identity of this acid? (Hint: This is a weak acid, but you can complete this neutralization problem just as if it was a strong acid.)
a) Acetic acid
b) Citric acid
c) Formic acid
d) Lactic acid