Q 1501734628.     Calculate`Delta H°` for the reaction,

`Na_(2)O(s) + SO_(3)(g)-> Na_(2)SO_(4)(g)` given the following:

(A) `Na(s) + H_(2)O(l)-> NaOH(s) +1/2 H_(2)(g)`

` Delta H^0 = -146 quad KJ`

(B)` Na_(2)SO_(4)(S) + H_(2)O(l)-> 2NaOH(s) + SO_(3)(g)`

` Delta H^0 = +418 quad KJ`

(C)` 2Na_(2)O(s) + 2H_(2)(g)-> 4Na(s) + 2H_(2)O(l)`

` Delta H^0 = +259 quad KJ`

BITSAT 2009
A

`+ 823 kJ`

B

`-581 kJ`

C

`-435 kJ`

D

`+531 kJ`

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