
Khan Academy
Khan Academy ... Khan Academy
Titration curves & equivalence point (article) | Khan Academy
However, in the previous 2 videos, NH3 is used as the titrant, and HCl serves as the titrand/ analyte solution. Therefore, the resultant titration curves for the videos and this article are different even …
Titration of a weak base with a strong acid (continued)
Calculating the pH for titration of weak base, ammonia, with strong acid, HCl, at the equivalence point and past the equivalence point.
Brønsted-Lowry acids and bases (article) | Khan Academy
Therefore, HCl is acting as a Brønsted-Lowry acid. Since NH 3 has a lone pair which it uses to accept a proton, NH 3 is a Brønsted-Lowry base. Note that according to the Arrhenius theory, the above …
Buffer solution pH calculations (video) | Khan Academy
Example of calculating the pH of a buffer solution using the Henderson-Hasselbalch equation, including the pH of the buffer solution after adding some NaOH.
Reacciones de oxidación–reducción (redox) - Khan Academy
Una reacción de oxidación–reducción, o reacción redox, es una reacción en la que hay una transferencia de electrones entre especies químicas (los átomos, los iones o las moléculas que …
Ácidos y bases de Brønsted-Lowry (artículo) | Khan Academy
Por lo tanto, el HCl está actuando como un ácido de Brønsted-Lowry. Como el NH 3 tiene un par solitario de electrones que utiliza para aceptar un protón, NH 3 es una base de Brønsted-Lowry. …
Weak base–strong acid reactions (video) | Khan Academy
Learn about weak base-strong acid reactions, including their net-ionic equations and pH determination, in this AP Chemistry video lesson.
Worked example: Using Hess's law to calculate enthalpy of reaction
Hess's law can be used to calculate enthalpy changes that are difficult to measure directly. In this video, we'll use Hess's law to calculate the enthalpy change for the formation of methane, CH₄, from solid …
Titration of a weak base with a strong acid - Khan Academy
In a weak base-strong acid titration, the acid and base will react to form an acidic solution. A conjugate acid will be produced during the titration, which then reacts with water to form hydronium ions. This …