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Q.

Given that S(s) + 32O2(g) → SO3(g)  + 2xK.Cal .SO2(g) + 12O2(g) → SO3(g) + yK.Cal . The enthalpy of formation SO2 will be

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a

2x-y

b

2x+y

c

y-2x

d

y-x

answer is C.

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Detailed Solution

Ss+32O2g→SO3g, ∆H=-2x Kcals....1 SO2g+12O2g→SO3g,∆H=-y Kcals....2 Eq1-Eq2 Ss+O2g→SO2g, ∆H=y-2x ;
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