Question
The products of combustion of an aliphatic thiol $$(RSH)$$ at
$$298 K$$ are
A.
$$C{o_2}\left( g \right),\,{H_2}O\left( g \right)\,{\text{and}}\,S{O_2}\left( g \right)$$
B.
$$C{O_2}\left( g \right),{H_2}O\left( l \right)\,{\text{and}}\,S{O_2}\left( g \right)$$
C.
$$C{O_2}\left( l \right),{H_2}O\left( l \right)\,{\text{and}}\,S{O_2}\left( g \right)$$
D.
$$C{O_2}\left( g \right),{H_2}O\left( l \right)\,{\text{and}}\,S{O_2}\left( l \right)$$
Answer :
$$C{O_2}\left( g \right),{H_2}O\left( l \right)\,{\text{and}}\,S{O_2}\left( g \right)$$
Solution :
$${C_2}{H_5}SH + \frac{9}{2}{O_2}\left( g \right) \to 2C{O_2}\left( g \right) + 3{H_2}O\left( l \right) + S{O_2}\left( g \right)$$
At $$298\,K,C{O_2}\,{\text{and}}\,S{O_2}$$ exist as gases while $${H_2}O$$ exists as liquid.