MCQ
Which of the following is non-polar
- A${H_2}S$
- B$NaCl$
- ✓$C{l_2}$
- D${H_2}S{O_4}$
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$C(s) + O_2(g) \to CO_2(g) + x\ kJ$
$CO(g) + \frac {1}{2}O_2(g) \to CO_2(g) + y\,kJ$
The heat of formation of $CO(g)$ is