The graph below shows the titration of a solution of 0.1 M weak diprotic acid H₂A with 0.1 M NaOH. Identify the major species present in significant amounts at the point marked B. [Select all that apply] pH of solution E 14.0 13.0 12.0 11.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 H₂A H₂A+ HA A²- OH™ 0 12 B C D 24 36 48 60 72 volume of base added (mL) 84 E 96

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.