Three moles of $PCl_{5}$, three moles of $PCl_{3}$ and two moles of $Cl_{2}$ are taken in a closed vessel. If at equilibrium the vessel has 1.5 moles of $PCl_{5}$, the number of moles of $PCl_{3}$ present in it is

Question

Dr. Abubacker · Accepted Answer

(d)
$PCl_{5}\ \ \ \  \rightleftharpoons \ PCl_{3}\ \ \ \ \ \ \  + \ \ \ \ Cl_{2}$
3 mol 3 mol 2 mol initially
(3-$x$) mol (3 $x$)mol (2 $x$)mol at equilibrium
$\because$ $3 - x\ \ \ \ \ \ 1.5$
$x\ \ \ \ \ \ \ 1.5$
Number of moles of $PCl_{3}\ \ \ 3\ \ \ \ x$
3 1.5 4.5

Q. Three moles of $PCl_{5}$, three moles of $PCl_{3}$ and two moles of $Cl_{2}$ are taken in a closed vessel. If at equilibrium the vessel has 1.5 moles of $PCl_{5}$, the number of moles of $PCl_{3}$ present in it is

Explanation

Reviewed by Dr. Abubacker

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