Lec-32-Chap-05-2 - Cola Drinks Solvent water Solutes carbon...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
CHE 131 Lecture 31 – Reactions in Aqueous Solutions Chapter 5: pp. 165-185. Oxidation-Reduction Reaction Oxidation –loss of electrons Reduction – gain of electrons Redox reaction oxidizing agent – substance that causes oxidation reducing agent – substance that cause reduction Common Oxidizing and Reducing Agents Fig. 5-8, p.182 Burning of Magnesium in air forming magnesium oxide, a white powder.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
p.182a Fig. 5-9, p.182 p.182b Copper and Nitric Acid
Background image of page 2
Copper Oxide and Hydrogen Gas Recognizing Redox Reactions Solution homogeneous mixtures of two or more substances . usually a solution is thought of as a liquid that contains some dissolved substance such as a liquid or a gas. solid solutions – alloys of gold and silver. Solute • substance that is present in smallest quantity • dissolved substance(s) • can be either a gas, a liquid, or a solid • one or more present in a solution
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Solvent • substance present in largest quantity • only one per solution • water in aqueous solutions
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Cola Drinks Solvent water Solutes carbon dioxide (gas) sweetener (solid) phosphoric acid (liquid) caramel color (solid) Molarity The number of moles of solute per liter of solution. molarity M moles of solute M = liter of solution units molar = moles/liter = M p.193 Solution Preparation from Solid Solution Preparation by Dilution Stoichiometric Relationships Fig. 5-18a, p.201 AgBr from Silver nitrate and Potassium bromide Fig. 5-18b, p.201 Addition of Sodium thiosulfate: Solid AgBr dissolves. Titrations EXAMPLE: A sample of lye, sodium hydroxide, is neutralized by sulfuric acid. How many milliliters of 0.200 M H 2 SO 4 are needed to react completely with 25.0 mL of 0.400 M NaOH ? 2 NaOH (aq) + H 2 SO 4(aq) Na 2 SO 4(aq) + 2 H 2 O Parts per Million #g of solute #mg of solute ppm = 10 6 = #g of solution #kg of solution #micro-L solute ppm = #Lof solution...
View Full Document

Page1 / 6

Lec-32-Chap-05-2 - Cola Drinks Solvent water Solutes carbon...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online