1. Warm Up 4-11-16 1.What is the molarity of a 500mL solution that contains 0.00029 moles of HCl? 2. What is the pH and pOH of that solution? 3. What is a neutralization reaction? Agenda -Turn in lab -Notes Unit 9-3 -Practice WS Homework April 15 - Quiz Unit 9 April 21 – Test Unit 9 April 22 - Online HW

2. Unit 9-3 Titrations Key Concept: How much acids/bases are required to cancel each other out?

3. Neutralization Reaction Equation A neutralization reaction in aqueous solution produces an ionic compound (a salt) and water. Examples: 1. NaOH (aq) + HCl (aq)  2. KOH (s) + HNO 3 (aq) 

4. Check-in Sulfuric acid, H 2 SO 4 (aq), reacts with magnesium hydroxide, Mg(OH) 2 (aq). Write the neutralization reaction. ________ + ________ +  ______+_______

5. Titration – Lab Technique Titration: a procedure in which a neutralization reaction is carry out and monitored with an indicator allowing you to find the unknown concentration of an acid or base.

6. Titrations –Equivalence point: when the number of moles of [H + ] is equal to the number of moles of [OH - ] in the solution –Use the equation: (M= molarity, V= volume) M acid V acid = M base V base

7. Example If 25.0 mL of 0.500 M nitric acid, HNO3, solution is required to neutralize 62.0 mL of sodium hydroxide, NaOH, what is the molarity of the NaOH?

8. Check-in If 20.6 mL of 0.010M aqueous NaOH is required to titrate 30.0 mL of HCl (aq) to the equivalence point, what is the molarity of the HCl solution?

9. Assignments Summary Practice worksheet