Calculate ∆ H^{\circ} for the reaction, {\Na}_2 {\O}(s)+ {\SO}_3(g) \to {\Na}_2 {\SO}_4(g) given the following : (A) {\Na}(s)+ {\H}_2 {\O}(l) \to {\NaOH}(s)+\frac{1}{2} {\H}_2(g) ∆ H^{\circ}=+418 {\kJ} (B) {\Na}_2 {\SO}_4(s)+ {\H}_2 {\O}(l) \to 2 {\NaOH}(s) + {\SO}_3(g) (C) 2 {\Na}_2 {\O}(s)+2 {\H}_2(g) \to 4 {\Na}(s)+2 {\H}_2 {\O}(l) ∆ H^{\circ}=+259 {\kJ}

EAMCET Engineering 2009 Solved Paper

Section: Chemistry

Question : 79 of 160

Marks: +1, -0

Calculate ∆H∘ for the reaction, Na2O(s)+SO3(g)→Na2SO4(g) given the following :
(A) Na(s)+H2O(l)→NaOH(s)+‌

H2(g)
∆H∘=+418‌kJ
(B) Na2SO4(s)+H2O(l)→2‌NaOH(s)
+SO3(g)
(C) 2Na2O(s)+2H2(g)→4‌Na(s)+2H2O(l)
∆H∘=+259‌kJ

Go to Question:

Prev Question

Next Question