CM-UY 1004 Lecture Notes - Lecture 6: Bromine, Sodium Hydroxide, Sodium Chloride
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20 Sep 2016
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Synthesis (direct combination): element/compound + element/compound one compound. Decomposition (analysis): one compound element/compound + element/compound. Single replacement: element + compound compound + element. Double replacement (exchange of ions): compound + compound compound + compound. Combustion: hydrocarbon + oxygen carbon dioxide + water. Water is always gaseous during a combustion reaction. Exception: 2 ch3oh + o2 4 h2 + 2 co2. Alkali metal + water hydrogen gas + base 2 na + 2 h2o h2 + 2 naoh. Cation: positive charged ion (gets smaller, are metals, and loses electrons) Anion: negative charged ion (gets larger, are nonmetals and gains electrons) Democritus: world is made of empty space and tiny particles atomos . Aristotle: matter is continuous (not made of small particles) false. Boyle: worked with gases (v vs. p) and was the father of modern chemistry. Lavoisier: the law of conservation of mass (matter can"t be created or destroyed, it can only be rearranged)
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A chemist fills a reaction vessel with 4.09 atm methane (CH gas, 4.25 atm oxygen (2) gas, 6.29 atm carbon dioxide (CO2 gas, and 9.87 atm hydrogen (H2) gas at a temperature of 25.0° C. Under these conditions, calculate the reaction free energy ÎG for the following chemical reaction: CH4(g) +02(g)--CO2(g)+2H2(g) Use the thermodynamic information in the ALEKS Data tab. Round your answer to the nearest kilojoule