Chapter 4 - Reactions in Aqueous Solution_Part5

Chapter 4 - Reactions in Aqueous Solution_Part5 - GENERAL...

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GENERAL CHEMISTRY CHAPTER 4 – REACTIONS IN AQUEOUS SOLUTION PAGE 21 OF 35 Acid-Base Neutralization Reactions Example : What volume of 0.100 M HCl is required to completely neutralize 50.00 mL of 0.200 NaOH? Step 1 : Write a balanced equation Step 2 : Use Mole Ratios to Solve for Volume Example : A 50.00-mL sample of aqueous Ba(OH) 2 requires 34.66-mL of 0.0980 nitric acid for neutralization. Calculate the concentration of the original solution of barium hydroxide. Step 1 : Write a balanced equation Step 2 : Use Mole Ratios to Solve for Molarity
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GENERAL CHEMISTRY CHAPTER 4 – REACTIONS IN AQUEOUS SOLUTION PAGE 22 OF 35 Oxidation – Reduction Reactions – “Redox “ Oxidation-Reduction reactions = reactions that involve transferring electrons from one atom to another Historic Definitions: Oxidation = the combination of an element with oxygen to form an oxide 4Fe (s) + 3O 2 (g) 2Fe 2 O 3 Reduction = the removal of oxygen from an oxide to form an element (s) Rusting of Iron = An oxidation of iron 2Fe 2 O 3 (s) + 3C 4Fe (s) + 3CO 2 Today’s Definitions (g) Forming Iron = A reduction of iron Oxidation = the loss of electrons by an element Reduction = the gain of electrons by an element Recall : to convert an atom into an ion, an atom must gain or lose electrons If one atom loses electrons in a reaction, another atom must accept or gain them Electrons cannot be lost or vanish into thin air
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This note was uploaded on 01/21/2011 for the course PHYS 4A 60865 taught by Professor L. oldewurtel during the Fall '09 term at Irvine Valley College.

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Chapter 4 - Reactions in Aqueous Solution_Part5 - GENERAL...

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