18. A solution containing 10. mmol of and 5.0 mmol of is titrated with 1.0 M HCl. What volume of HCl must be added to reach the first equivalence point? (A) 5.0 mL (B) 10.0 mL (C) 15.0 mL (D) 20.0 mL (E) 25.0 mL
18. A solution containing 10. mmol of an..-阿摩線上測驗