4. - An important reaction in the production of sulfuric acid is the formation of sulfur trioxide gas. 2SO2 (g) + 02 (g) 2SO3 (g) A) Using the AH; values to calculate the enthalpy change for the reaction. Is the reaction endothermic or exothermic? B) What quantity of thermal energy (heat) is transferred when 40.0 g of SO2 and 50.0 g of O2 react? C) Using the information from (b) determine the volume of SO3 gas obtained at STP.

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4. F An important reaction in the production of sulfuric acid is the formation of sulfur trioxide gas.
2S02 (g) + O2 (g)
2SO3 (g)
A) Using the AH; values to calculate the enthalpy change for the reaction. Is the reaction
endothermic or exothermic?
B) What quantity of thermal energy (heat) is transferred when 40.0 g of SO2 and 50.0 g of O2
react?
C) Using the information from (b) determine the volume of SO3 gas obtained at STP.
D) Using the information from (b) what is the actual yield of SO3 in grams if the percent of yield
of the reaction is only 85.0%?
E) For a different experiment, determine the volume of air necessary for the combustion of 40.0 g of
SO2, assuming that air is 21.0% O2 by volume?
Transcribed Image Text:4. F An important reaction in the production of sulfuric acid is the formation of sulfur trioxide gas. 2S02 (g) + O2 (g) 2SO3 (g) A) Using the AH; values to calculate the enthalpy change for the reaction. Is the reaction endothermic or exothermic? B) What quantity of thermal energy (heat) is transferred when 40.0 g of SO2 and 50.0 g of O2 react? C) Using the information from (b) determine the volume of SO3 gas obtained at STP. D) Using the information from (b) what is the actual yield of SO3 in grams if the percent of yield of the reaction is only 85.0%? E) For a different experiment, determine the volume of air necessary for the combustion of 40.0 g of SO2, assuming that air is 21.0% O2 by volume?
Enthalpies of formation, kJ/mol at 25°C, 1 atm:
Al,O3(s)
-1675.7
CO(g)
-110.5
NH3(g)
-46.11
B2H,(g)
36
CO2(g)
-393.5
NHẠNO3(s)
-365.6
-1272.8
-272.0
82.05
B2O3(s)
FeO(s)
N20(g)
-558
Fe,O3(s)
-824.2
90.25
BaQ(s)
NO(g)
-1473
135
33.18
BaSO4(s)
HCN(g)
NO2(g)
-74.81
-241.8
-411.1
H2O(g)
CH4(g)
NaCl(s)
-135.4
-285.9
573.64
CCL4(E)
H2O({)
Nal(s)
-132
-291.9
-287.8
H,O(s)
SO2(g)
CHC13(t)
226.7
-92.31
-296.8
52.26
HC/(g)
-20.6
SO3(g)
-395.7
CH2(g)
-84.68
H,S(g)
62.43
SiO2(s)
-903.5
CH4(g)
49.03
I(g)
50.63
SİH4(g)
C,H,(g)
N,H4(E)
CgH,(t)
Transcribed Image Text:Enthalpies of formation, kJ/mol at 25°C, 1 atm: Al,O3(s) -1675.7 CO(g) -110.5 NH3(g) -46.11 B2H,(g) 36 CO2(g) -393.5 NHẠNO3(s) -365.6 -1272.8 -272.0 82.05 B2O3(s) FeO(s) N20(g) -558 Fe,O3(s) -824.2 90.25 BaQ(s) NO(g) -1473 135 33.18 BaSO4(s) HCN(g) NO2(g) -74.81 -241.8 -411.1 H2O(g) CH4(g) NaCl(s) -135.4 -285.9 573.64 CCL4(E) H2O({) Nal(s) -132 -291.9 -287.8 H,O(s) SO2(g) CHC13(t) 226.7 -92.31 -296.8 52.26 HC/(g) -20.6 SO3(g) -395.7 CH2(g) -84.68 H,S(g) 62.43 SiO2(s) -903.5 CH4(g) 49.03 I(g) 50.63 SİH4(g) C,H,(g) N,H4(E) CgH,(t)
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