Chemical and Ionic Equilibrium - Result Question 101

####45. (a) The degree of dissociation is 0.4 at 400K and 1.0atm for the gaseous reaction PCl5PCl3+Cl2. Assuming ideal behaviour of all the gases, calculate the density of equilibrium mixture at 400K and 1.0atm (relative atomic mass of P=31.0 and Cl=35.5).

(b) Given, [Ag(NH3)2+]Ag++2NH3,

Kc=6.2×108 and Ksp  of AgCl =1.8×1010 at 298K.

If ammonia is added to a water solution containing excess of AgCl(s) only. Calculate the concentration of the complex in 1.0M aqueous ammonia.

(1998,3M+5M)

Show Answer

Solution:

  1. (a)

Average molar mass =208.51.4=148.9

ρ( density )=pMRT=1×148.90.082×400=4.54g/L

(b) AgCl(s)+2NH3(aq)x=[Ag(NH3)2+12x]+Clx

K=KspKc=2.9×103=(x12x)2

x=0.049M



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक