2. Vinegar is a solution of acetic acid, CH3COOH, dissolved in water. A 5.54g sample of vinegar was neutralized by 30.10 mL of 0.100 M NaOH. What is the percent by weight of acetic acid in the vinegar?
(A) 0.184%
(B) 1.63%
(C) 3.26%
(D) 5.43%
(E) 9.23%

考題觀念本題在測驗酸鹼中和滴定的計算能...