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.1 MOLE OF NH4Cl is dissolved in 1L water., of degree of dissociation of NH4Cl is .8 and its degree of hydrolysis is .1 then the vant hoff factor for NH4Cl will be

.1 MOLE OF NH4Cl is dissolved in 1L water., of degree of dissociation of NH4Cl is .8 and its degree of hydrolysis is .1 then the vant hoff factor for NH4Cl will be

Grade:12th pass

1 Answers

varun
304 Points
6 years ago
HELLO SHEKAR,
understand the reactions first
NH4Cl (l) --------->NH4+(aq)  +  Cl-(aq)
this represents dissociation
NH4+(aq) + H2O(l)   NH4OH(l) + H+(aq)
this represents hydrolysis
 
aNOW,
                         NH4Cl  ----------->   NH4+  +  Cl-
 
initially                  1 mol                   0           0
 
 at equilbrium         1-a                       a           a
 
therefore,
total number of moles at equilibrium  = 
                                                          = 1--a-2a
so,
                                                       i = 1-a-2a
                                                       i = 1+a
                                          if a=8(given)
i=9
so vant hoff factor = 9
THANK YOU                    

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