Combustion of hydrocarbons such as octane (C8H18) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's atmosphere can trap the Sun's heat, raising the average temperature of the Earth. For this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide. 1. Write a balanced chemical equation, including physical state symbols, for the combustion of liquid octane into gaseous carbon dioxide and gaseous water. 2C8H₁8 (1) + 250₂ (g) 16CO₂(g) + 18H₂O(g) 2. Suppose 0.310 kg of octane are burned in air at a pressure of exactly 1 atm and a temperature of 17.0 °C. Calculate the volume of carbon dioxide gas that is produced. Round your answer to 3 significant digits. OL ローロ 00
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
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Combustion of hydrocarbons such as octane (CH₁8) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's atmosphere can trap the
Sun's heat, raising the average temperature of the Earth. For this reason there has been a great deal of international discussion about whether to regulate the
production of carbon dioxide.
1. Write a balanced chemical equation, including physical state symbols, for the
combustion of liquid octane into gaseous carbon dioxide and gaseous water.
2Cg H₁8 (1) + 250₂ (g)
,
8
18
16CO₂ (g) + 18H₂O(g)
2
2. Suppose 0.310 kg of octane are burned in air at a pressure of exactly 1 atm and a
temperature of 17.0 °C. Calculate the volume of carbon dioxide gas that is produced.
Round your answer to 3 significant digits.
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X
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