Episode 22 starts with a recap of the five types of chemical reactions described in episode 6. But then we are getting in deep! The episode introduces acid-base reactions and defines them as reactions in which protons are being transferred (1:53). Not protons, but electrons are being transferred in redox reactions (3:15). To identify which atom has been oxidized and reduced, we recap oxidation numbers (4:12) and look at the combustion of methane (8:19). Last, but not least, we recap precipitation reactions, compare it to dating and learn about eternal bachelors (9:11).Question: (11:38) Which laboratory technique is often used to determine the concentration of an unknown acid?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 2020 - The APsolute RecAP, LLC. All rights reserved.)Website:www.theapsoluterecap.comEMAIL:TheAPsoluteRecAP@gmail.comFollow Us:INSTAGRAMTWITTERFACEBOOKYOUTUBE