Enthalpy Practice #1 Consider the reaction for production of water vapor: 2H, +0, → 2H,0+572.J / mol a. As the reaction proceeds, energy is absorbed Kreleased. b. This reaction can be classified asexothermic endothermic c. The sign of the enthalpy term (AH) would be positive negative. @>absorbed B>exothermic >PoSitive #2 Coneider a cbemical evste the ceactante bave a total internal rmLof 65Rki and tbe products have

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- IrmityR
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Enthalpy Practice
#1 Consider the reaction for production of water vapor: 2H, +0, → 2H,0+572KJ / mol
a. As the reaction proceeds, energy is absorbed kreleased.
b. This reaction can be classified asexothermicendothermic
G. The sign of the enthalpy term (AH) would be positive Knegative.)C Pacitve.
@>absorbed
B> exothermic
#2 Consider a chemical system where the reactants have a total internal energy of 658KJ and the products have a
total internal energy of 458 kJ.
a. This reaction is exothermie/ endothermic.
b. The value of the enthalpy of reaction is Vo ko kJ/mol. (circleor -)
c. The reactants/producs are more thermodynamically stable.
#3 Consider the photosynthesis reaction: 2870KJ/mol +6CO, +6H,0→C¸H„O, +60,
a. This reaction isexothermi/ endothermic.
b. The value
the enthalpy of reaction is+/-
kJ/mol.
Thermochemistry-Stoichiometry SHOW WORK for credit
# 4 How many moles of glucose would be produced if 6 moles of CO, and 6 moles of H,0 are reacted?
mol CaH1206
#5 What is the molar mass of glucose? 180.1563/mol (10?)
#6 How many grams of glucose would be produced if 2 moles of CO, and 4 moles of H,0 are reacted? (10')
grams CH1206
#7 How much energy would be required to produce 120 grams of glucose? (10)
the
bove,
requed to o er
#8 What mass of glucose would be needed to produce 4300 kJ of energy? (10*)
kJ
grams CH1206
Transcribed Image Text:- IrmityR Name: Enthalpy Practice #1 Consider the reaction for production of water vapor: 2H, +0, → 2H,0+572KJ / mol a. As the reaction proceeds, energy is absorbed kreleased. b. This reaction can be classified asexothermicendothermic G. The sign of the enthalpy term (AH) would be positive Knegative.)C Pacitve. @>absorbed B> exothermic #2 Consider a chemical system where the reactants have a total internal energy of 658KJ and the products have a total internal energy of 458 kJ. a. This reaction is exothermie/ endothermic. b. The value of the enthalpy of reaction is Vo ko kJ/mol. (circleor -) c. The reactants/producs are more thermodynamically stable. #3 Consider the photosynthesis reaction: 2870KJ/mol +6CO, +6H,0→C¸H„O, +60, a. This reaction isexothermi/ endothermic. b. The value the enthalpy of reaction is+/- kJ/mol. Thermochemistry-Stoichiometry SHOW WORK for credit # 4 How many moles of glucose would be produced if 6 moles of CO, and 6 moles of H,0 are reacted? mol CaH1206 #5 What is the molar mass of glucose? 180.1563/mol (10?) #6 How many grams of glucose would be produced if 2 moles of CO, and 4 moles of H,0 are reacted? (10') grams CH1206 #7 How much energy would be required to produce 120 grams of glucose? (10) the bove, requed to o er #8 What mass of glucose would be needed to produce 4300 kJ of energy? (10*) kJ grams CH1206
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