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Neutralization

Chapter 5a

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Chemistry 1210: Introduction to General Chemistry Dr. Gina M. Florio 20 Sept. 2012 Jespersen, Brady, Hyslop Chapter 5A Molecular View of Reactions in Aqueous Solution A solution is a homogeneous mixture in which the two or more components mix freely. The solvent is taken as the component present in the largest amount. A solute is any substance dissolved in the solvent. Definitions CH. 5.1 Example of a Solution Formation of a solution of iodine molecules in ethyl alcohol where ethyl alcohol is the solvent and iodine the solute: CH. 5.1 Crystal of I2 placed in ethanol: A solution of I2 in ethanol: Properties of Solutions: Qualitative Composition The relative amounts of solute and solvent are often given without specifying the actual quantities.

Acid and Base Lab (unanswered)

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Name:______________________________________ Data EXPERIMENT 1 Litmus Paper ? COLOR CHANGE ? HYDROCLORIC ACID SODIUM HYDROXIDE RED LITMUS PAPER ? ? BLUE LTIMUS PAPER ? ? EXPERIMENT 2 Cabbage Indicator ? COLOR CHANGE AFTER 5 DROPS COLOR CHANGE AFTER 10 DROPS TEST TUBE 1 ? ? CABBAGE INDICATOR W/ HYDROCHLORIC ACID ? ? ? TEST TUBE 2 ? ? CABBAGE INDICATOR W/ SODIUM HYDROXIDE EXPERIMENT 3 Neutralization Reaction Describe what color changes you observed as you combined the content of the two test tubes. EXPERIMENT 4 Hydrion Paper ? COLOR CHANGE pH HYDROCHLORC ACID ? ? SODIUM HYDROXIDE ? ? CARBONC ACID (SELTZER WATER) ? ? ACETIC ACID (VINEGAR) ? ? MAGNESIUM HYDROXIDE & ALUMINUM HYDROXIDE

Bob Jones PPT Notes -- Chapter 9b

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Stoichiometry 1 Literally means ?to measure the elements? Answers questions like?How much is needed?? and ?How much is produced?? Stoichiometry Unit analysis 365 days 1 year 24 hrs 1 day 3600 sec. 1 hr 1 year How many seconds are in a year? = 31,536,000 sec. Unit analysis We use unit analysis in stoichiometric problems also. Grams-to-moles conversion factors are found in the periodic table. Unit analysis Mole-to-mole conversion factors are found in the coefficients of the equation. A mole-to-mole conversion changes moles of one substance to moles of another substance. ?Skeleton Equation?

Acids and Bases

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Unit 7: Acid and Bases Acid Base Lemonade Dressing Vinegar Drain-0 Arm-n-Hammer Arrhenius Acids: When in a solution, they donate protons (H+) A proton in water becomes a ?hydronium? ion H3) SameEx) HCL (aq) H+(aq) + Cl-(aq) HCl(l) + H2) H30+(aq) + Cl- Acids cause indicators to change color (Table M) Ex) Bromthymol blue, litmus, phenolphthalein Sour Taste (ex. Citric acid) pH<7 (0-7) (pure acid 100%) Measure of H+ concentration p= power (pH. If [H+} = 1 X 10-7 All acids dissolve metal to produce H2 gas (corrosive) chemically dissolve A neutralization reaction occurs b/t an acid and a base to form a salt and water Arrhenius Base: When in a solution, they donate hydroxide ions (OH-) to the solution
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