A) \[+128.02\text{ }kJ\]
B) \[-128.02kJ\]
C) \[-212.24\text{ }kJ\]
D) \[+212.24\text{ }kJ\]
Correct Answer: A
Solution :
Given, \[C+{{O}_{2}}\xrightarrow{{}}C{{O}_{2}},\Delta H=-393.3kJ\]?..(i) \[S+{{O}_{2}}\xrightarrow{{}}S{{O}_{2}},\,\Delta H=-293.72kJ\]?..(ii) \[C{{S}_{2}}+3{{O}_{2}}\xrightarrow{{}}C{{O}_{2}}+2S{{O}_{2}},\], \[\Delta H=-1108.76kJ\] ?..(iii) Required equation is \[C+2S\xrightarrow{{}}C{{S}_{2}},\,\,\Delta H=?\] \[\frac{Eq\,(i)+2\times Eq(ii)-Eq(iii)}{C+2S-C{{S}_{2}}}\] \[\Delta H=128.02kJ\]
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