Question

$C{H}_{3}C{H}_{2}C{H}_{2}C{H}_{3\left(g\right)}\rightleftharpoons C{H}_3-\underset{iso-butane}{\underset{C{H}_3}{\underset{|}{C}H}}-C{H}_{3\left(g\right)}$

• A. $75\%$
• B. $90\%$
• C. $30\%$
• D. $60\%$

Answer 1

The correct option is A $75\%$

$K_c$ for the above reaction is represented as

$K_c=\frac{isobutane}{butane}$

$\left(isobutane\right)=3\left(butane\right)$

So the concentration of sobutane is thrice of butane in 100% solution of the isobutane and butane.

So isobutane $=75\%$