VITEEE 2009 Paper

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Question : 79 of 120
 
Marks: +1, -0
Calculate ΔH° for the reaction,
Na2O(s)+SO3(g)Na2SO4(g)
given the following :
(A) Na(s)+H2O(l)
ΔH°=146kJ
NaOH(s)+
1
2
H2
(g)

(B) Na2SO4(s)+H2O(l)
ΔH°=+418kJ
2NaOH(s)+SO3(g)

(C) 2Na2O(s)+2H2(g)
ΔH°=+259kJ
4Na(s)+2H2O(l)
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