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Chemistry 100(02) Fall 2010

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Types of Chemical Reactions and Solution Stoichiometry

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Chapter 15:

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States of Matter Review Clicker

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Entry Task: April 27 th Friday

Entry Task: April 27 th Friday. Question: What is the molarity of 1.2 moles of calcium carbonate in 1.22 liters of water?. Agenda:. Sign off Discuss Concentration ws Notes on Dilutions HW: Concentration and Dilution ws.

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ACIDS AND BASES

ACIDS AND BASES. TITRATIONS. Acid Base Titration. A very accurate method to measure concentration. Acid + Base ? Salt + Water. H + + OH - ? H 2 O. Moles H + = Moles OH -. Buret. Solution with Indicator. Acid-Base Titrations.

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Define displacement reaction . Predict what will happen when:

Define displacement reaction . Predict what will happen when: Magnesium is put into Silver Nitrate solution Zinc is put into Magnesium Nitrate solution Write down the symbol equation for the reaction between Calcium metal and Lead Nitrate solution.

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Acids and Bases

Acids and Bases. Acids. An acid is a substance that produces hydrogen ions (H + ) when in solution with water Water (H 2 O) is made up of even amounts of H + and OH - ions. Water is NEUTRAL because of this. When an acid dissolves in water, this changes the amount of H + ions.

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Number One Sodium chloride solution + lead (II) acetate solutions react

Objective: Practice 8 chemical reactions (2 of each kind) by writing word equations and balancing them, and deciding if they are synthesis, decomposition, single replacement, or double replacement. Please take out your reference tables, put away your phones , and get ready to think.

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Equilibria

Equilibria. An Introduction for Chem Honors Students. Reaction is reversible Both products and reactants are present Forward and reverse reactions take place at the same rate. For the reaction 2A ? B. What is an Equilibrium Reaction?. K expression. In general terms

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Previously in Chem104: What determines reaction spontaneity? Entropy

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More on Reactions

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Molecular Formula

Molecular Formula. Percent Composition ? Empirical Formula. The percent composition of fuel is 81.7% carbon and 18.3% hydrogen. What is the empirical formula of the fuel? Start by assuming 100 g of the compound (81.7 g) / (12.01 g/mol) = 6.80 mol C (18.3 g) / (1.008 g/mol) = 18.2 mol H.

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Precipitation Reactions

Precipitation Reactions. Precipitation. When two aqueous solutions combine to form an insoluble or only slightly soluble salt. Solubility Rules. Memorize: sodium, potassium, ammonium and nitrate always soluble. Is Each Soluble?. AgNO 3 KCl K 2 CrO 4 AgCl Ba(OH) 2 CaS NaOH.

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Chapter 10 Acids and Bases

Chapter 10 Acids and Bases. 10.1 Acids and Bases 10.2 Conjugate Acid-Base Pairs. Acids. Arrhenius acids Produce H + ions in water. H 2 O H Cl H + (aq) + Cl - (aq) Are electrolytes. Have a sour taste. Corrode metals.

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O 2 + 2H 2 ? 2H 2 O

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Solute

Solute. substance that is dissolved usually less amount. Solvent. substance doing the dissolving. Concerning Solutions. Like things dissolve like things Polar dissolves polar compounds nonpolar dissolves nonpolar. Ions will react only if one of the following happens.

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Coolest Demo of the School Year

Coolest Demo of the School Year Table I shows us 25 chemical reactions and physical changes, and the ? H for each of them. When ? H is a negative number, the reaction is exothermic. When ? H is a positive number, the reaction is endothermic

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Steps for solving titration problems

Steps for solving titration problems. Balanced neutralization equation Volume & concentration of base -> mols OH - mols OH - to mols H 3 O + mols H 3 O + to mols acid mols acid & volume acid to concentration of acid. Practice Titration Problem.

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Assignment #34 Hydrates, Naming & Formulas

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