Calculating pH for acid-base titrations (7)

Chemistry: Calculating pH at various points on a titration curve. Titration of a strong acid with a strong base--vertical intercept; left of equivalence point; equivalence point; right of equivalence point. Titration of a weak acid with a strong base—vertical intercept; half-equivalence point; equivalence point; right of equivalence point. How to do titration calculations without a calculator

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(1) TITRATION OF A STRONG ACID WITH A STRONG BASE--vertical intercept
(2) Continued. Left of equivalence point
(3) Continued
(4) Equivalence point. Right of equivalence point
(5) Continued. Titration of a strong base with a strong acid. TITRATION OF A WEAK ACID WITH A STRONG BASE—vertical intercept
(6) Continued. Half-equivalence point
(7) Continued. [6:51] Equivalence point
(8) Continued
(9) Right of equivalence point
(10) Continued
(11) Titration of a weak base with a strong acid

Category:

Education

Tags:

• chemistry
• titration
• curve
• strong
• acid
• base
• equivalence
• point
• weak
• half-equivalence
• pH
• pKa
• calculations

[gaz123123]

VV weak*

[gaz123123]

joejacksonriley: A week acid has a relatively strong conjugate base. However, when the conjugate of a weak acid is compared to absolutely strong bases (NaOH, KOH) it is considered weak.

If a weak acid had an absolutely strong base how could it ever exist in equilibrium? The reaction would just go to completion.

[joejacksonriley]

I thought the conjugate of a weak acid was a strong base.

[MaTripleX09]

Once again, you have made complicated topics very easy to understand as well as demonstrated the reasoning behind it. You have a talent for teaching!

[zut212]

At 1:12, you mention that a "weak acid has a weak conjugate base." I thought that a weak acid has a VERY STRONG conjugate base, and vice-versa?