15.A student uses 16.60 mL of 0.100 M NaOH to titrate a 0.2000-g sample of an unknown acid. Which of thefollowing acids is the unknown most likely to be? Assume that only the hydrogens bonded to oxygen aretitrated by the sodium hydroxide and that, because of experimental error, the student's value may not beidentical to the theoretical value.
(A) succinic acid, HOOCCH2CH2COOH, molar mass 118
(B) benzoic acid, C6H5COOH, molar mass 122
(C) phthalic acid, C6H4 (COOH)2, molar mass 166
(D) oxalic acid, HOOCCOOH, molar mass 90
(E) not enough information