Q.
A solution of 1.25 g of P in 50 g of water lowers the freezing point of water by 0.3oC. Molar mass of P is 94.Kfwater=1.86 K kg mol-1.' The degree of association of P in water is
see full answer
Want to Fund your own JEE / NEET / Foundation preparation ??
Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*
An Intiative by Sri Chaitanya
a
80%
b
60%
c
65%
d
75%
answer is A.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
Step I Calculation of van't Hoff factor for P ΔTf=i×Kf×m=i×Kf×w2×1000w1×M20.3=i×1.86×1.25×100050×94⇒ i=0.3×50×941.86×1.25×1000=0.6064Step II Calculation of degree of association of P Degree of association,α =i−11n−1=0.6064−112−1=−0.3936−0.5=0.7872=78.72%≈80%
Watch 3-min video & get full concept clarity