Chemical Equilibrium Question 9
Question 9 - 01 February - Shift 2
The effect of addition of helium gas to the following reaction in equilibrium state, is :
$PCI_5(g) \rightarrow PCl_3(g)+Cl_2(g)$
(1) the equilibrium will shift in the forward direction and more of $Cl_2$ and $PCl_3$ gases will be produced.
(2) the equilibrium will go backward due to suppression of dissociation of $PCl_5$.
(3) helium will deactivate $PCl_5$ and reaction will stop.
(4) addition of helium will not affect the equilibrium.
Show Answer
Answer: (1)
Solution:
Formula: Factors affecting le-chateliers principle
$PCI_5(g) \rightarrow PCl_3(g)+Cl_2(g)$
(Case 1 : At constant $P$ - volume will increase so reaction will shift in forward direction then answer will be A
Case 2 : At constant volume no change in active mass so reaction will not shift in any direction then
