Combustion of hydrocarbons such as nonane (C9H20) 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 nonane into gaseous carbon dioxide and gaseous water. 2. Suppose 0.210kg of nonane are burned in air at a pressure of exactly 1atm and a temperature of 15.0°C. Calculate the volume of carbon dioxide gas that is produced. Round your answer to 3 significant digits.
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Ответ:
349 L (To 3 significant figures)
Explanation:
The reaction equation is;
C9H20(l) + 14O2(g) > 9CO2(g) + 10H2O(g)
number of moles of nonane in 0.210 Kg = mass/molar mass
molar mass of nonane = 9(12) + 20(1) = 128 gmol-1
Hence number of moles = 0.210 * 10^3g/128 gmol-1 = 1.64 moles
If 1 mole of nonane produced 9 moles of CO2 from the balanced reaction equation;
1.64 moles of nonane will produce 1.64 * 9/1 = 14.76 moles of CO2
Now from the ideal gas equation;
PV=nRT
P = 1 atm
V= the unknown
n= 14.76
R = 0.082 atmLmol-1K-1
T = 15 + 273 = 288 K
V= nRT/P
V = 14.76 * 0.082 * 288/1
V = 348.57 L
Ответ:
As the name implies, a wet cell battery employs a liquid electrolyte-containing medium to trigger a chemical reaction. For example, in a lead acid battery, a liquid electrolyte solution containing 65 percent water and 35 percent sulfuric acid sits in contact with metal plates of lead and lead oxide.