Question

An amount of $2$ moles of $KCl{O}_3$ is decomposed completely to produce $O_2$ gas, How many moles of butene $C_4{H}_8$ can be burnt completely by the $O_2$ gas produced?

• A. $0.5$
• B. $1.0$
• C. $2.0$
• D. $3.0$

Answer 1

The correct option is A $0.5$

$2KCl{O}_3\to 2KCl+3O_2$
$C_4{H}_8+6O_2\to 4C{O}_2+4H_{2}O$
$2\text{moles of}KCl{O}_3\equiv 3\text{mole of}{O}_2\equiv 0.5\text{mole of}{C}_4{H}_8$