Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

How many moles per litre of PCl5 has to be taken to obtain 0.1 mole of Cl2 if the value of equilibrium constant is 0.04: A. 0.15 B. 0.25 C. 0.35 D. 0.05

How many moles per litre of PCl5 has to be taken to obtain 0.1 mole of Cl2 if the value of equilibrium constant is 0.04:
A. 0.15
B. 0.25
C. 0.35
D. 0.05

Grade:12th pass

1 Answers

Arun
25763 Points
one year ago
Consider a as initial concentration of PCl5 and x be degree of dissociation.
Dissociation of PCl5 takes place according to following reaction
PCl5 → PCl3+Cl2
Initial conc: a 0 0
Final conc : a(1-x) ax ax
[Cl2] = 0.1 = ax ...(1)
Kc = ([PCl3][Cl2])/ [PCl5]
0.04 = (ax. ax)/a(1-x)
Solving this we'll get,
x=0.4
From (i) 
a = 0.1/0.4 = 0.25
Hence, we can say moles of PCl5 added is 0.25 moles
 
 

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free