Question
In: Chemistry
Calculate ΔH∘ in kilojoules for the reaction of acetylene (C2H2) (ΔH∘f=227.4kJ/mol) with O2 to yield carbon...
Calculate ΔH∘ in kilojoules for the reaction of
acetylene (C2H2) (ΔH∘f=227.4kJ/mol) with O2 to yield
carbon dioxide (CO2)(ΔH∘f=−393.5 kJ/mol) and
H2O(g) (ΔH∘f=−241.8kJ/mol), a reaction which is
supplied by the industrial gases industry for oxyacetylene gas
welding and cutting due to the high temperature of the flame.
2C2H2(g)+5O2(g)→4CO2(g)+2H2O(g)
Express your answer using one decimal place.
Solutions
Expert Solution
fH0
C2H2 = 227.4 KJ/mol
fH0
O2(g) = 0 KJ/mol
fH0
CO2(g) = -393.5 KJ/mol
fH0
H2O(g) = -241.8 KJ/mol
H0 =
fH0
(Product) - fH0
(Reactant)
H0 =
[(4
fH0
CO2) + (2fH0
H2O)] - [(2fH0
C2H2) + (5fH0
O2)]
= [(4 (-393.5)) +
(2 (-241.8))] -
[2(227.4) +
(5 (0)]
= [-2057.6] - [454.8]
H0 =
-2512.4 KJ/mol
H0 for
reaction = -2512.4 KJ/mol
queen_honey_blossom answered 1 year agoRelated Solutions
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Express your answer in kilojoules. DETAILED STEPS
PLEASE!
THANKS <3
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Part 1. Consider the following reaction at 298 K:
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Calculate the following quantities:
ΔSsys=____J(molxK)
ΔSsurr=____J(molxK)
ΔSuniv=____J (molxK)
Part 2. For a particular reaction, ΔH = 168.1
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IE1 (Cs) = 376 kJ/mol
EA1 (F) = -328 kJ/mol
-1414 kJ/mol
-1493 kJ/mol
-714 kJ/mol
-758 kJ/mol
-837 kJ/mol
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2.5108 MJ
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13.2 MJ
52.7 MJ
9.05 MJ
options listed above
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