Answer:
The reaction quotient (Q) before the reaction is 0.32
Explanation:
Being the reaction:
aA + bB ⇔ cC + dD
[tex]Q=\frac{[C]^{c} *[D]^{d} }{[A]^{a}*[B]^{b} }[/tex]
where Q is the so-called reaction quotient and the concentrations expressed in it are not those of the equilibrium but those of the different reagents and products at a certain instant of the reaction.
The concentration will be calculated by:
[tex]Concentration=\frac{number of moles of solute}{Volume}[/tex]
You know the reaction:
PCl₅ (g) ⇌ PCl₃(g) + Cl₂(g).
So:
[tex]Q=\frac{[PCl_{3} ] *[Cl_{2} ] }{[PCl_{5} ]}[/tex]
The concentrations are:
Replacing:
[tex]Q=\frac{0.08*0.16}{0.04}[/tex]
Solving:
Q= 0.32
The reaction quotient (Q) before the reaction is 0.32
