Thermochemistry Consider the combustion of propane: CzHs (g) + 5 02 (g) - 3 CO2 (g)...
Thermochemistry Consider the combustion of propane: CzHe (g) + 5 02 (g) - 3 CO2 (g) + 4 H20 (g) Use the heats of formation in the table to calculate AH reaction. substance C.H. (g) CO2 (g) 02 (9) H2O(g) AH" (kl/mol) -105 -394 0 -242 Is this reaction exothermic or endothermic? Explain your choice. The surroundings would become (circle one) warmer cooler Energy is (circle one) released from absorbed by the reaction.
Thermochemistry Consider the combustion of propane: AH (k/mol) -105 substance CaHs (g) CO2 (g) O2 (g) H2O (g) 3 CO2 (g) + 4 H20 (g) CaHe (g) + 5 02 (g) -394 0 Use the heats of formation in the table to calculate AHatons -242 Is this reaction exothermic or endothermic? Explain your choice. The surroundings would become (circle one) cooler warmer Energy is (circle one) released from absorbed by the reaction.
help on B and F. 1. Propane, CzHs, burns in air. The reaction is exothermic and the enthalpy change is equal to -2044 kJ/mol. a. Give the correct balanced chemical equation to represent the combustion of propane. CH₂ 191 +50201 320 (s) + 4H₂O(g) b. Fill in the blanks using information from the balanced thermochemical equation. mol rxn - mol CH3 - _ mol O2 = _ mol H20 - _ mol CO2- c. Circle your choice to complete the...
Consider the combustion reaction of propane: C3H8(g)+ 5 02(g)3 CO2(g) +4 H20(g), where AH= -531 kcal. If 6.70 x 104 kcal of energy is released in the reaction, how many grams of oxygen were consumed? ed 12.6 g of O2 2.02x 104 g of O2 wer X 63.1g of O2 404 g of O2 Byt Hack
Given the enthalpies of combustion of propane (C3Hg), carbon and hydrogen, C3H3(g) + 5 O2(g) + 3 CO2(g) + 4 H20(1) AH° = -2219.9 kJ C(s) + O2(g) + CO2(8) AH° = -393.5 kJ 2 H2(g) + O2 + 2 H2O(1) AH° = -571.6 kJ Calculate the enthalpy of formation of propane. The reaction is shown below. 3 C(s) + 4H2(g) → C3H3(g)
Homework Thermochemistry Name: 1. Calculate the mass of O2 that is produced by photosynthesis when 2.49 x 10° kJ of solar energy is consumed by the following reaction: 6 H20 (1) + 6 CO2 (g) C6H12O6 (s) + 6 O2 (g) ; AH = 2803 kJ 2. Given the following thermochemical equation, what amount of energy is absorbed/given off when 255 g of Cu20 is reacted. 2 Cu20 (s) 4 Cu (s) + O2(g) ; AH = 333.8 kJ 3....
Question 3 Propane (C3Hg) undergoes combustion according to the following thermochemical equation: C3H8(g) + 5 O2(g) - 3 CO2(g) + 4H2O(g) AHrxn=-2043.0 kJ Substance Heat of Formation (kJ/mol) CO2(g) -393.5 H2O(g) -241.8 O2(g) 0 C3H8(g) ? Calculate the standard enthalpy of formation of propane C3Hg a. -104.7 kJ/mol O b. +1407.7 kJ/mol O C. -1407.7 kJ/mol O d. +104.7 kJ/mol o e. -4190.7 kJ/mol uestion 4 Consider the evaporation of liquid water to water vapor at 125°C. What is true...
Consider the combustion reaction of propane: CzHg(s) + 5O2(g) + CO2(g) + 4 H2O(g), where AH=-2223 kJ. If 6.70 X 104 kJ of energy is released in the reaction how many moles of water are formed? 0 120.6 moles There is no correct answer O 30.14 moles 0 90.4 moles O 15.07 moles
Question 3 Propane (C3H8) undergoes combustion according to the following thermochemical equation: C3H8(g) + 5 O2(g) -- 3 CO2(g) + 4H2O(g) Arxn = -2043.0 kJ Substance Heat of Formation (kJ/mol) CO2(g) -393.5 H2O(g) -241.8 O2(g) 0 C3H8(g) ? Calculate the standard enthalpy of formation of propane C3H8 a. -104.7 kJ/mol ob. +1407.7 kJ/mol C. -1407.7 kJ/mol O d. +104.7 kJ/mol o e. -4190.7 kJ/mol
The combustion of propane, C3H8, occurs via the reaction C3H8(g)+5O2(g)→3CO2(g)+4H2O(g) with heat of formation values given by the following table: Substance ΔH∘f (kJ/mol) C3H8 (g)= -104.7 CO2(g)= −393.5 H2O(g)= −241.8 Calculate the enthalpy for the combustion of 1 mole of propane.