7) The most important reaction that allows our cars to do work is octane (C8HI8) combustion. 2 08HI8 + 25 02 à 16 C02 + 18 H20 al Theoretically speaking, if we fully combust 3.0 kg of octane, and keep the products at STR uhat volume of gas do we expect to be produced? b) If the % yield for this combustion reaction is 90%, what is the actual volume?
7) The most important reaction that allows our cars to do work is octane (C8HI8) combustion. 2 08HI8 + 25 02 à 16 C02 + 18 H20 al Theoretically speaking, if we fully combust 3.0 kg of octane, and keep the products at STR uhat volume of gas do we expect to be produced? b) If the % yield for this combustion reaction is 90%, what is the actual volume?
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Chapter3: Calculations With Chemical Formulas And Equaitons
Section: Chapter Questions
Problem 3.141QP: A power plant is driven by the combustion of a complex fossil fuel having the formula C11H7S. Assume...
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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.
Question
Transcribed Image Text:7) The most important reaction that allows our cars to do work is octane (CSH18) combustion
2 C8HI8 + 25 02 à 16 C02 + 18 H20
a) Theoretically speaking, if we fully combust 3.0 kg of octane, and keep the products at STR, what volume of gas do we expect to be
produced?
b) If the % yield for this combustion reaction is 90%, what is the actual volume?
8) Name two characteristics that describe real gases and not ideal gasses.
9) a) A climber takes a mole of ideal qgas to the top of Mount Everest, where the pressure is 304 torr and the temperature is subzero at -17° C.
What is the volume of the gas?
b) The gas taken to Mount Everest is oxugen gas. What is the root mean square velocity of gas molecules in that sample of gas?
10.) a) An 8.00L tank at 7.3° C is filled with 24 g of dinitrogen monoxide (N2O) and 8.2 g of sulfur hexafluoride gas (SF6). What is the
mole fraction of sulfur hexafluoride?
b) What is the ratio between the rates of effusion of sulfur hexafluoride and dinitrogen monoxide?
I1.) Is the velocity of ideal gas particles proportional to temperature?
A) Yes B) No
12.) A sample of diborane gas (B2H6) at a pressure of 0.34 atm, at a temperature of -15° C has a volume of 3.48L. How many moles of
gas are there? If the temperature is raised to 36° C, what is the new volume?
13.) How would you make 100.0 ml of 0220 M NaClag) solution using a l00.0 ml volumetric flask?
14.) You would like to make 3L of O.10M HOlaq) solution from a stock solution with a concentration of 2.40 M HClaq). What volume of the
stock solution do uou need to measure?
15.) Which of the following is insoluble?
B) KI
A) NaBr
C) NH4C
D) SrINO312 E) Ag2S04
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