Our listener’s choice recaps three topics: (R)ICE tables, titrations and buffers. We start with the RICE table - what does it actually stand for? (0:49 ). RICE tables are best explained with an example. In our case: The reaction of gaseous hydrogen with gaseous chlorine to form gaseous hydrogen chloride - a reaction that has a K = 49. And we are calculating the concentrations at equilibrium (1:44 )! Two important tips for RICE tables: (1) practice, practice, practice; (2) make assumptions (4:09 ).

Our next two topics are connected: titrations and buffers. We start with the titration of a strong acid/strong base and discuss the calculation of the pH at several points along the titration curve (6:01 ). Our second example is the titration of a weak acid with a strong base. Again, we discuss the pH calculations along the titration curve, but then focus on buffers, which are formed when the weak acid is partially neutralized (7:29 ). The episode defines buffers and describes how they work (8:00 ). Moving along the titration curve, we discuss the calculations for buffers and the midway point of the titration (9:18 ), the calculations at equivalence point (10:03 ) and beyond the equivalence point.

Question: What will be the approximate pH of an equimolar solution of NH3 and HCl?

Thank you for listening to The APsolute RecAP: Chemistry Edition!

(AP is a registered trademark of the College Board and is not affiliated with The APsolute RecAP. Copyright 2021 - The APsolute RecAP, LLC. All rights reserved.)

Website:

www.theapsoluterecap.com

EMAIL:

TheAPsoluteRecAP@gmail.com

Follow Us:

INSTAGRAM

TWITTER

FACEBOOK

YOUTUBE