(1) For the given heat of reaciton, (i) `C(s)+O_(2)(g)=CO_(2)(g)+97 kcal` (ii) `CO_(2)(g)+C(s)=2CO(g)-39 kcal` the heat of combustion of `CO(g)` is:A. `68Kcal`B. `-68Kcal`C. `+48Kcal`D. None

(1) For the given heat of reaciton, (i) `C(s)+O_(2)(g)=CO_(2)(g)+97 kc

1.	(1) For the given heat of reaciton, (i) `C(s)+O_(2)(g)=CO_(2)(g)+97 kcal` (ii) `CO_(2)(g)+C(s)=2CO(g)-39 kcal` the heat of combustion of `CO(g)` is:A. `68Kcal`B. `-68Kcal`C. `+48Kcal`D. None
Answer» Correct Answer - A Subtracting equattion (ii) from equation (i), we get `C(s)+O_(2)(g)=CO_(2)(g)+97Kcal` `(CO_(2)(g)+C(s)=2CO(g)-39Kcal)/(or -CO_(2)(g)+O_(2)(g)-2CO(g)+136Kcal)` or, `2CO(g)+O_(2)=CO_(2)(g)+136Kcal` or, `CO(g)+1//2O_(2)(g)=CO_(2)(g)68Kcal` Required value `=68Kcal`

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(1) For the given heat of reaciton, (i) `C(s)+O_(2)(g)=CO_(2)(g)+97 kcal` (ii) `CO_(2)(g)+C(s)=2CO(g)-39 kcal` the heat of combustion of `CO(g)` is:A. `68Kcal`B. `-68Kcal`C. `+48Kcal`D. None

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