Similarly for weak bases
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Similarly for weak bases

Course Number: CHEM 1211 1211, Fall 2011

College/University: UGA

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Similarly for weak bases. The Brnsted-Lowry Theory Since NH3 is a weak base, NH4+ must be a strong acid. NH4+ gives up H+ to reform NH3. Compare that to NaOH Na+ (aq) + OH-(aq) Na+ must be a weak acid or it would recombine to form NaOH Remember NaOH ionizes 100%. NaOH is a strong base. The Brnsted-Lowry Theory Amines are weak bases that behave similarly to ammonia. The functional group for amines is an -NH2...

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for Similarly weak bases. The Brnsted-Lowry Theory Since NH3 is a weak base, NH4+ must be a strong acid. NH4+ gives up H+ to reform NH3. Compare that to NaOH Na+ (aq) + OH-(aq) Na+ must be a weak acid or it would recombine to form NaOH Remember NaOH ionizes 100%. NaOH is a strong base. The Brnsted-Lowry Theory Amines are weak bases that behave similarly to ammonia. The functional group for amines is an -NH2 group attached to other organic groups. The Autoionization of Water Water can be either an acid or base in Bronsted-Lowry theory. Consequently, can water react with itself. This reaction is called autoionization. One water molecule acts as a base and the other as an acid. The Autoionization of Water Water does not do this extensively. [H3O+] = [OH-] 1.0 x 10-7 M Autoionization is the basis of the pH scale which will be developed in Chapter 18. Amphoterism Other species can behave as both acids and bases. Species that can behave as an acid or base are called amphoteric. Proton transfer reactions in which a species behaves as either an acid or base is called amphiprotic.

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