Concept explainers
Ethanol (C2H5OH) bums in air:
C2H5OH(l) + O2(g) → CO2(g) + H2O)(l)
Balance the equation and determine the volume of air in liters at 45.0°C and 793 mmHg required to burn 185 g of ethanol. Assume that air is 21.0 percent O2 by volume.
Interpretation:
The given equation has to be balanced and the volume of air in liters has to be calculated.
Concept Introduction:
Ideal gas is the most usually used form of the ideal gas equation, which describes the relationship among the four variables P, V, n, and T. An ideal gas is a hypothetical sample of gas whose pressure-volume-temperature behavior is predicted accurately by the ideal gas equation.
A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the similar for both the reactants and the products.
Answer to Problem 11.89QP
The balanced equation given by
The volume of air was found to be
Explanation of Solution
Unbalance equation
Carbon is balanced by multiplying 2 in product side
Next Oxygen is balance by multiplying 3 in reactant side
Finally Oxygen and Hydrogen is balance
To determine the moles of each reactant by multiplying 3 in product side
Hence the balanced equation given by
To calculate the moles of
The moles of
To determine the volume of
The volume of
To determine air is 21.0 percent
The volume of air is calculated by plugging in the values of the given volume of
The given equation was balanced and the volume of air in liters was calculated.
Want to see more full solutions like this?
Chapter 11 Solutions
CHEM: ATOM FIRST V.2 W/ACCESS >C<
- A sample of a smoke stack emission was collected into a 1.25-L tank at 752 mm Hg and analyzed. The analysis showed 92% CO2, 3.6% NO, 1.2% SO2, and 4.1% H2O by mass. What is the partial pressure exerted by each gas?arrow_forwardAcetone peroxide, C9H18O6(s), is a powerful but highly unstable explosive that does not contain nitrogen. It can pass undetected through scanners designed to detect the presence of nitrogen in explosives like TNT (trinitrotoluene, C7H5N3O6), or ammonium nitrate. (a) Write a balanced equation for the combustion (burning in oxygen) of acetone peroxide producing steam and carbon dioxide. (b) What pressure is generated in a 2.00-L bottle when 5.00 g of acetone peroxide is ignited to 555C and burned in air? Assume 100% combustion.arrow_forwardThe Mount Pinatubo volcano eruption in 1991 released an estimated 1.82 x 1013g of SO2 into the atmosphere. If the gas had an average temperature of -17.0 C and filled the troposphere, whose approximate volume is 8 x 1021L, what is the approximate partial pressure of SO2 caused by the eruption?arrow_forward
- Sulfur trioxide, SO3, is produced in enormous quantities each year for use in the synthesis of sulfuric acid. S(s)+O2(g)SO2(g)2SO2(g)+O2(g)2SO3(g) What volume of O2(g) at 350.C and a pressure of 5.25 atm is needed to completely convert 5.00 g sulfur to sulfur trioxide?arrow_forwardMagnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3N2 Magnesium nitride reacts with water to give ammonia. Mg3N2(s)+6H2O(l)3Mg(OH)2(s)+2NH3(g) What volume of ammonia gas at 24C and 753 mmHg will be produced from 3.93 g of magnesium nitride?arrow_forwardA mixture contained calcium carbonate, CaCO3, and magnesium carbonate, MgCO3. A sample of this mixture weighing 7.85 g was reacted with excess hydrochloric acid. The reactions are CaCO3(g)+2HCL(aq)CaCl2(aq)+H2O(I)+CO2(g)MgCO3(s)+2HCL(aq)MgCl2(aq)+H2O(I)+CO2(g) If the sample reacted completely and produced 1.94 L of carbon dioxide, CO2, at 25C and 785 mmHg, what were the percentages of CaCO3 and MgCO3 in the mixture?arrow_forward
- 88 Liquid oxygen for use as a rocket fuel can be produced by cooling dry air to 183°C, where the O2 condenses. How many liters of dry air at 25°C and 750 torr would need to be processed to produce 150 L of liquid O2 at 183°C? (The mole fraction of oxygen in dry air is 0.21, and the density of liquid oxygen is 1.14g/mL.)arrow_forwardA sample of a breathing mixture for divers contained 34.3% helium, He; 51.7% nitrogen, N2; and 14.0% oxygen, O2 (by mass). What is the density of this mixture at 22C and 775 mmHg?arrow_forwardLithium hydroxide, LiOH, is used in spacecraft to recondition the air by absorbing the carbon dioxide exhaled by astronauts. The reaction is 2LiOH(s)+CO2(g)Li2CO3(s)+H2O(l) What volume of carbon dioxide gas at 21C and 781 mmHg could be absorbed by 327 g of lithium hydroxide?arrow_forward
- Workers at a research station in the Antarctic collected a sample of air to test for airborne pollutants. They collected the sample in a 1.00-L container at 764 torr and 20 C. Calculate the pressure in the container when it was opened for analysis in a particulate-free clean room in a laboratory in South Carolina, at a temperature of 22 C.arrow_forwardNitrogen trifluoride gas reacts with steam to produce the gases HF, NO, and NO2. (a) Write a balanced equation for the reaction. (b) What volume of nitrogen oxide is formed when 5.22 L of nitrogen trifluoride are made to react with 5.22 L of steam? Assume 100% yield and constant temperature and pressure conditions throughout the reaction.arrow_forwardA 275-mL sample of CO gas is collected over water at 31C and 755 mmHg. If the temperature of the gas collection apparatus rises to 39C, what is the new volume of the sample? Assume that the barometric pressure does not change.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
- Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co