15.1 Water and Its Properties > 1 1. How much solute is dissolved in 150 mL of a 5M solution (answer in moles)? Day moles of solute

15.1 Water and Its Properties > 2 Group Quiz (all periods) On-line Hwk 2 Chapt 4 (pd 8 on double) #6 = c(3 rd one down) # 9 = d(4 th one down) # 11 = a(1 st choice)

15.1 Water and Its Properties > 3 Day In a 1.5 M solution of Al 2 (SO 4 ) 3, how many moles of each ion are present in 200 mL of solution? 2.What volume of 10 M HCl must be diluted to prepare 500 mL of 1 M HCl? 3.Barium hydroxide has a low solubility, but is considered a strong electrolyte. Explain how this is possible.

15.1 Water and Its Properties > 4 On-line Hwk 2 Chapt 4 (pd 3 on double) #6 = HF (aq) + OH - (aq)  F - (aq) + H 2 O (l) # 9 = NH 4 NO 3 # 11 = weak acid

15.1 Water and Its Properties > 5 Day 5 2-9

15.1 Water and Its Properties > 6 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. I.Acid-Base Theories: A. Arrhenius Acids and Bases:  Arrhenius acid = an acid that gives hydrogen ions monoprotic acid = an acid containing one ionizable hydrogen, example = HCl diprotic acid = an acid containing two ionizable hydrogens, example = H 2 SO 4

15.1 Water and Its Properties > 7 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. I.Acid-Base Theories: A. Arrhenius Acids and Bases: triprotic acid = an acid containing three ionizable hydrogens, example = H 3 PO 4 *** A hydrogen atom is only ionizable if it is bonded to a very electronegative element, otherwise it will not be released in solution.

15.1 Water and Its Properties > 8 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. I.Acid-Base Theories: A. Arrhenius Acids and Bases: Question: How many of the hydrogen atoms in acetic acid are ionizable? H—C—C—O—H H H O only 1

15.1 Water and Its Properties > 9 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. I.Acid-Base Theories: A. Arrhenius Acids and Bases:  Arrhenius base = a base that gives hydroxide ions

15.1 Water and Its Properties > 10 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. I.Acid-Base Theories: B. Bronsted-Lowry acids and Bases (a broader definition):  Bronsted-Lowry acid = hydrogen ion donor  Bronsted-Lowry base = hydrogen ion acceptor – broader definition than an Arrhenius base Example: NH 3(aq) + H 2 O (l) NH 4 + (aq) + OH - (aq) baseacid

15.1 Water and Its Properties > 11 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Notes  Amphoteric substances = substances that can act as either an acid or a base depending on the other substance

15.1 Water and Its Properties > 12 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. I.Acid-Base Theories: C. Lewis Acids and Bases:  Lewis acid = an electron pair acceptor  Lewis base = an electron pair donor Example: NH 3(aq) + H 2 O (l) NH 4 + (aq) + OH - (aq)

15.1 Water and Its Properties > 13 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Assignment Page 160 #s – due tomorrow

15.1 Water and Its Properties > 14 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Assignment Page 160 #s – due tomorrow

15.1 Water and Its Properties > 15 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. ATB Day pd 1 only Additional Example (in notes – page 2): HCl (g) + H 2 O (l) H 3 O + (aq) + Cl - (aq) acid = ___________ base = ___________ conjugate acid = ___________ conjugate base = ___________

15.1 Water and Its Properties > 16 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. 2. What volume of 10 M HCl must be diluted to prepare 500 mL of 1 M HCl? 3. Barium hydroxide has a low solubility, but is considered a strong electrolyte. Explain how this is possible. Day In a 1.5 M solution of Al 2 (SO 4 ) 3, how many moles of each ion are present in 200 mL of solution? 2.What volume of 10 M HCl must be diluted to prepare 500 mL of 1 M HCl? 3.Barium hydroxide has a low solubility, but is considered a strong electrolyte. Explain how this is possible.

15.1 Water and Its Properties > 17 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. 2. What volume of 10 M HCl must be diluted to prepare 500 mL of 1 M HCl? 3. Barium hydroxide has a low solubility, but is considered a strong electrolyte. Explain how this is possible. Day In a 1.5 M solution of Al 2 (SO 4 ) 3, how many moles of each ion are present in 200 mL of solution? 2.What volume of 10 M HCl must be diluted to prepare 500 mL of 1 M HCl? 3.Barium hydroxide has a low solubility, but is considered a strong electrolyte. Explain how this is possible.

15.1 Water and Its Properties > 18 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. 2. What volume of 10 M HCl must be diluted to prepare 500 mL of 1 M HCl? 3. Barium hydroxide has a low solubility, but is considered a strong electrolyte. Explain how this is possible. Day In a 1.5 M solution of Al 2 (SO 4 ) 3, how many moles of each ion are present in 200 mL of solution? 2.What volume of 10 M HCl must be diluted to prepare 500 mL of 1 M HCl? 3.Barium hydroxide has a low solubility, but is considered a strong electrolyte. Explain how this is possible.

15.1 Water and Its Properties > 19 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. 2. What volume of 10 M HCl must be diluted to prepare 500 mL of 1 M HCl? 3. Barium hydroxide has a low solubility, but is considered a strong electrolyte. Explain how this is possible. Day In a 1.5 M solution of Al 2 (SO 4 ) 3, how many moles of each ion are present in 200 mL of solution? 2.What volume of 10 M HCl must be diluted to prepare 500 mL of 1 M HCl? 3.Barium hydroxide has a low solubility, but is considered a strong electrolyte. Explain how this is possible.