Question

Calculate the number of moles of ethylene required to produce $44$g of carbon dioxide gas on its complete combustion.

[Atomic mass of $C=12$ u, Atomic mass of $H=1$ u, Atomic mass of $O=16$ u].

• A. 1
• B. 4.4
• C. 2
• D. 0.5

Answer 1

The correct option is D 0.5

$C_2{H}_4+3O_2⟶2C{O}_2+2H_{2}O$

Moles of $C{O}_2$ produced $=\frac{44}{44}=1$ $mole$

$1$ $mole$ of $C_2{H}_4$ reacts to give $2$ $mole$ $C{O}_2$.

$0.5$ $mole$ of $C_2{H}_4$ will give $1$ $mole$ $C{O}_2$.

So, $0.5$ $mole$ of ethylene is required.

Hence, option $D$ is correct.