pata ni yaar kaise F- ans hai!
aur sochte hai ... sapne me [3]
for reversible reaction in aq soln
Zn2++X-→ZnX+,Keqis greatest when X is???
a)F-
b)NO3-
c)ClO4-
d)I-
H+ is also hard..
NH3 is hard base.
Acetate ion is hard base
and .... :P
Aur bhi hai hard acid aur bases..
Zn2+ is also hard..
u should haev heard ZnCl2 more than ZnI2
hard acids:
small atomic or ionic radii.. ek Li+ Na+ H+ Carbocations..
but how is then Zn2+ hard acid?????????
Hard acid form more stable compounds with hard bases.. and soft with soft..
hard acids:
small atomic or ionic radii.. ek Li+ Na+ H+ Carbocations..
hard bases: OH- OR- F- Cl- low polarisable.
Soft acids :
Silver platinum mercury
soft bases:
I- CO SCN-
F-
because ZnF+ is most stable. as Zn+2 is hard acid and F- is hard base.. so hard hard combination.. so more stable product
pehli baar mera tukka theek thaa.....par pata nahin thaa itni musibat mein daal dega.....[3][3]
@sky,
even i used the same concept, but for finding equivalent conductance which is greatest for ZnI. But as it is equilibrium const.,......sry!
back bonding ?!
back bonding only occurs 'efficiently' for pÎ -pÎ bonds..
and in Zn2+, there is NO empty orbitals...
Zn = 3d10,4s2
Zn2+ = 3d10.
so no possibility of back-bonding.
yeh bhi hosakta hai ki Zn ke pass orbitals hai avcnt n F is quite ful of eltrons so ..........woh (back bondin type )
the concept is: the more the tendency of X to get oxidised, the more the reaction tends towards right and hence more the Keq.
but then I- has the most tendency to lose e- .. !!
F- is unstable n wud want to get oxideisd.... but is it more than I- [12]
my tukka was a which was rite,,,,,,,,,,,,,but i still cant get teh concept..