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Given the following thermochemical equations, NO(g) + O3(g) →NO2(g) + O2(g)ΔH = −198.9 kJ/mol  O3(g) →3/2O2(g) ΔH = −142.3 kJ/mol  O2(g) → 2O(g)ΔH = +495 kJ/mol determine the enthalpy change for the reaction 2NO2(g) →2NO(g) + O2(g) ΔH =  kJ/mol

Question

Given the following thermochemical equations,
 
NO(g) + O3(g) →NO2(g) + O2(g)
ΔH = −198.9 kJ/mol
 
 
O3(g) →3/2O2(g
ΔH = −142.3 kJ/mol
 
 
O2(g) → 2O(g)
ΔH = +495 kJ/mol
 
determine the enthalpy change for the reaction
 
2NO2(g) →2NO(g) + O2(g)
 ΔH =  kJ/mol
check_circleAnswer
Step 1
bellewe
The reactou with aH are
NO
NO
t
AH= 198.9 KTmol
를요녕
AH
142.3 KJ mo
20
+ 495 KJ
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bellewe The reactou with aH are NO NO t AH= 198.9 KTmol 를요녕 AH 142.3 KJ mo 20 + 495 KJ

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Step 2
sp tor calculating
are wentiouedd oelon:
The
AH
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sp tor calculating are wentiouedd oelon: The AH

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Step 3
1:The )veaction is veverced and mutiplied
2Sinilarty, its AH i ve versed and
2'a shonm below i
2N02
(4)
FO AH
(t1989)x2
3978 kJ mol"'.
help_outline

Image Transcriptionclose

1:The )veaction is veverced and mutiplied 2Sinilarty, its AH i ve versed and 2'a shonm below i 2N02 (4) FO AH (t1989)x2 3978 kJ mol"'.

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