Combustion of hydrocarbons such as hexane (C6H14) 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 hexane into gaseous carbon dioxide and gaseous water.2. Suppose 0.360kg of hexane are burned in air at a pressure of exactly 1atm and a temperature of 12.0°C. Calculate the volume of carbon dioxide gas that is produced. Be sure your answer has the correct number of significant digits.L583.
Question
Combustion of hydrocarbons such as hexane (C6H14) 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 hexane into gaseous carbon dioxide and gaseous water.2. Suppose 0.360kg of hexane are burned in air at a pressure of exactly 1atm and a temperature of 12.0°C. Calculate the volume of carbon dioxide gas that is produced. Be sure your answer has the correct number of significant digits.L583.
Solution
-
The balanced chemical equation for the combustion of liquid hexane into gaseous carbon dioxide and gaseous water is:
C6H14(l) + 19/2 O2(g) → 6 CO2(g) + 7 H2O(g)
-
To calculate the volume of carbon dioxide gas produced, we first need to determine the number of moles of hexane burned. The molar mass of hexane is approximately 86.18 g/mol. So, 0.360 kg or 360 g of hexane is about 4.18 moles.
From the balanced chemical equation, we know that 1 mole of hexane produces 6 moles of carbon dioxide. Therefore, 4.18 moles of hexane will produce about 25.08 moles of carbon dioxide.
We can use the ideal gas law (PV=nRT) to calculate the volume. Given that the pressure P is 1 atm, the number of moles n is 25.08, the gas constant R is 0.0821 L·atm/(K·mol), and the temperature T is 12.0°C or 285.15 K (remember to convert from Celsius to Kelvin), we can solve for V:
V = nRT/P = 25.08 moles * 0.0821 L·atm/(K·mol) * 285.15 K / 1 atm = 585 L
Therefore, the volume of carbon dioxide gas produced is 585 L.
Similar Questions
Combustion of hydrocarbons such as methane (CH4) 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 gaseous methane into gaseous carbon dioxide and gaseous water.2. Suppose 0.350kg of methane are burned in air at a pressure of exactly 1atm and a temperature of 12.0°C. Calculate the volume of carbon dioxide gas that is produced. Be sure your answer has the correct number of significant digits.L
Which greenhouse gas is produced by the combustion of fossil fuels?1 markMethaneNitrous OxideWater VaporCarbon dioxide
Which greenhouse gas is most likely to come from burning of fossil fuels?methanesulfur hexafluoridecarbon dioxidewater vapor
Show below is the combustion of hexane, C6H14.C6H14 + O2--> CO2 + H2OIf 420 grams of hexane and 2,200 grams of air are supplied, compute for the percentage excess.Write your final answer in two decimal places.Use the following mass numbers:C - 12 g/molH - 1 g/molO - 16 g/mol
Combustion of alkane will produceGroup of answer choicesCarbon dioxide, water, and heatWaterHeatCarbon dioxide
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.