How to Calculate the pH of a Buffer Solution After Adding Acid (HCl)

In this video, I will teach you how to calculate the new pH of a buffer solution after adding an acid. This skill is useful when asked to calculate the change in buffer pH after adding acid. This example will look at the effect of adding hydrochloric acid and will use the Henderson Hasselbalch equation to calculate the pH.

This worked example is relevant for both A level and AP chemistry as well as degree level.

[illuminatiyearsago]

This was simpler than I expected, thank god :D

[nafisrahman]

Bro..how will get the Molarity of the conjugate base ?

[oskard.]

Is it possible to add moles with concentration? Because I would think that you can only add moles with moles.. Great Video though!

[patrickstar]

It gets always talked about the addition of a strong acid or strong base to a buffer... my question would be how to calculate the ph with the addition of a weak acid? Lets say the addition of acetic acid to a phosphate buffer

[helenebrian]

Not helpful. You were bringing values without telling where they are gotten.

[catcato]

😭😭😭 Thanks Much 💜💜💜💜💜💜😳😳😳 Millions of likes to your video.I knew that formula but was confused due to another method being written on my book that was difficult thanks so much 🥺🥺🥺💜💜💜💜 you saved mAh time..

[petersikambale]

How did you get the 2.4 x 10^-2 concentration of the acid .
And the 1.79 x 10^-2 of the base ?.
Kind of confused

[muhammadmuhiddin]

Bro how do you get molarity of conj bas

[c_olivassusana.]

Lol, I can't see your full screen. I don't understand anything because of that.