Methanol is burned as fuel in some race cars. This makes it clear that the reaction is spontaneous once methanol is ignited. Yet the entropy change for the reaction:
2 CH3OH(l) + 3 O2(g) → 2 CO2(g) + 4H2O(l) is negative.
Why doesn’t this violate the Second Law of Thermodynamics? Explain.
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Methanol is burned as fuel in some race cars. This makes it clear that the reaction...
9. Certain race cars use methanol (CH3OH; also called wood alcohol) as a fuel. Methanol has a molecular mass of 32.0 g/mol and a density of 0.79 g/mL. The combustion of methanol occurs according to the following equation: 2CH3OH + 3O2 ? 2CO2 + 4H2O In a particular reaction 2.00 L of methanol are reacted with 80.0 kg of oxygen. a. What is the limiting reactant? b. What reactant and how many grams of it are left over? c. How...
A.) B.) Methanol (CH3OH) is used as a fuel for some types of race cars, because it readily combusts in air to form CO2 and H2O. Write a balanced equation for the complete combustion of methanol. Do not include the states of matter We were unable to transcribe this image
When methanol, CH3OH , is burned in the presence of oxygen gas, O2 , a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation CH3OH ( g ) + 3/2 O2 ( g ) ⟶ CO2 ( g ) + 2H2O ( l ) Δ H = − 764 kJ How much methanol, in grams, must be burned...
When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation CH3OH(g)+32O2(g)⟶CO2(g)+2H2O(l)Δ?=−764 kJ How much methanol, in grams, must be burned to produce 807 kJ of heat? mass in grams:
Methanol (CH3OH) is used as a fuel in race cars. Part A Write a balanced equation for the combustion of liquid methanol in air, assuming H2O(g) as a product. Express your answer as a chemical equation. Identify all of the phases in your answer. SubmitPrevious AnswersRequest Answer Incorrect; Try Again; 5 attempts remaining Part B Calculate the standard enthalpy change for the combustion of 1 mol of liquid methanol, assuming H2O(g) as a product. Express your answer using four significant...
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a 2 Mg(s) +,(@) 2 Mgo (s) AS b. CH206(s) → 2C,H,OH(I) + 2003(g) AS c. 2 NH3(g) + CO2(g) → H2O(l) + NH CONH3(aq) AS d. Cu(s) (at 100°C) → Cu(s) (at 25°C) AS 2. Which two variables can indicate if a reaction is spontaneous or not? 3. The second law of thermodynamics tells us that: a Energy is conserved. b. The entropy of...
QUESTION 5 Consider the formation of solid silver chloride from aqueous silver and chloride ions. Given the following table of thermodynamic data at 298 K: The value of K for the reaction at 25 °C is ________. a) 1.8 × 104 b) 3.7 × 1010 c) 1.9 × 10-10 d) 810 e) 5.3 × 109 QUESTION 6 Consider the reaction: NH 3 (g) + HCl (g) → NH 4Cl (s) Given the following table of thermodynamic data, ...
31. When 9.42 g of methane (CH4) is burned in a bomb calorimeter (heat capacity = 2.677 × 103 J/°C), the temperature rises from 24.00 to 27.08°C. How much heat is absorbed by the calorimeter? CH4(g) + 2O2(g) → CO2(g) + 2H2O(l); ΔH° = –1283.8 kJ a. 745 kJ b. 4.84 × 103 kJ c. 8.24 kJ d. 753 kJ e. 1.28 × 103 kJ 32. Which of the following statements is incorrect concerning the wave function? The wave function...
1. Match the definitions at the left with the most appropriate term on the right. NOTE: A given term in the right-hand column may or may not be used more than once. _An example of a secondary air pollutant A. PM2.5 Estimated number of children worldwide under 5 years of age B. PM10 that are killed by air pollution each year Geographic region where about two-thirds of all air pollution C. Carbon monoxide (CO) related deaths occur D. Nitrogen dioxide...
Methane gas is burned with 30 percent excess air. This fuel enters a steady- flow combustor at 0.8 atm and 25oC and is mixed with the air. The products of combustion leave this reactor at 0.8 atm and 1600 K. Determine the equilibrium composition of the products of combustion and the amount of heat released by this combustion in kJ/kmol methane. Use data from the tables CH 25°C CO2, H3O chamber NO. O2 N2 1600 K 30% excess air 25°C...