What is the primary species in solution at the halfway point in a titration of hcl with koh
Answers
Answer:
Explanation:
Before we start discussing about titration and titration curves, we should quickly refresh the concept of a weak/strong acid and weak/strong base.
A strong acid dissociates (or ionizes) completely in aqueous solution to form hydronium ions (H_{3}
3
start subscript, 3, end subscriptO^\text{+}
+
start superscript, start text, plus, end text, end superscript)
Diagram of strong acid ionizing to form hydronium ions
Diagram of strong acid ionizing to form hydronium ions
A weak acid does not dissociate completely in aqueous solution to form hydronium ions (H_{3}
3
start subscript, 3, end subscriptO^\text{+}
+
start superscript, start text, plus, end text, end superscript)
Diagram of weak acid not dissociating completely to form hydronium ions
Diagram of weak acid not dissociating completely to form hydronium ions
A strong base dissociates completely in aqueous solution to form hydroxide ions (OH^\text{-}
-
start superscript, start text, negative, end text, end superscript)
Diagram of strong base dissociating to form hydroxide ions
Diagram of strong base dissociating to form hydroxide ions
A weak base does not dissociate completely in aqueous solution to form hydroxide ions (OH^\text{-}
-
start superscript, start text, negative, end text, end superscript)
Diagram of weak base not dissociating completely to form hydroxide ions
Diagram of weak base not dissociating completely to form hydroxide ions
Examples of weak/strong acids and bases
Type Examples
Strong Acids hydrochloric acid (HCl), sulfuric acid (H_{2}
2
start subscript, 2, end subscriptSO_{4}
4
start subscript, 4, end subscript), nitric acid (HNO_{3}
3
start subscript, 3, end subscript)
Weak Acids acetic acid (CH_{3}
3
start subscript, 3, end subscriptCOOH), hydrofluoric acid (HF), oxalic acid (COOH)_{2}
2
start subscript, 2, end subscript
Strong Bases sodium hydroxide (NaOH), potassium hydroxide (KOH), lithium hydroxide (LiOH)
Weak Bases ammonium hydroxide (NH_{4}
4
start subscript, 4, end subscriptOH), ammonia (NH_{3}