[ssssss]

So i am on the verge of finishing and throughly revising My Stoichiometry Syllabus.These are the problems i want to clear:

1.I once asked how to calculate the Equivalent weight of Co-ordination Compounds?But i am Confused again with it.Please tell me the proper manner to find it.Please solve these compound as an Example K₄Fe[CN]₆.
2.Is [NH]₄PbCl₆ a Co-ordinate compound?What is its Equivalent weight.
3.Equivalent weigh of Mo₄O₃[C₂O₄]₂12H₂O
4.Please tell are these reactions possible:

Na₂SO₄ + HCL-------->

KClO₃ + HCL---------->

CaSO₄ + NaOH--------->

[Demotivator]

As you know, the equiv wt is the amount to react completely with one equiv of something else.  But first, you have to determine what that something is.

With coordination compounds, its assumed that we're talking about the capacity for ligand transfer. (Coord compounds can also do electron transfer in which case the equiv wt would be different).

for K4Fe[CN]6 , there are six cordination sites for the six ligands (CN).
So eq wt = MW/6  .  That's the amount to react  completely with one equiv of a donor.

NH]4PbCl6  is again 6 sites.  MW/6

Mo4O3(C2O4)₂12H2O
This one is tricky. C2O4 is a bidentate ligand. 2 of them makes a total of four sites. But is O cosidered a ligand or a fixed oxide?  I'm not 100% sure but I don't think it  is a coordination ligand.  Is H2O (12 of them) a ligand?  I think its water of crystallization by the way it's written, not ligand.
So, eq wt = MW/4

[AWK]

Coordinates compouds are salts. So equivalent is calculated in the same manner as for salts.
K4Fe[CN]6 - eq=1/4 mole
(NH₄)₂[PbCl6] - eq=1/2 mole
But in specific reaction, eg
K4Fe[CN]6 + 6HCl = 4KCl + FeCl2 +6HCN - eq=1/6 mole
(NH₄)₂[PbCl6] +6AgNO₃ = 6AgCl + Pb(NO₃)₂ + 2NH₄NO₃ - eq=1/6 mole

I cannot guess, what structure of Mo4O3(C2O4)₂.12H2O can be

[ssssss]

As you know, the equiv wt is the amount to react completely with one equiv of something else.  But first, you have to determine what that something is.

With coordination compounds, its assumed that we're talking about the capacity for ligand transfer. (Coord compounds can also do electron transfer in which case the equiv wt would be different).

for K4Fe[CN]6 , there are six cordination sites for the six ligands (CN).
So eq wt = MW/6  .  That's the amount to react  completely with one equiv of a donor.

NH]4PbCl6  is again 6 sites.  MW/6

Mo4O3(C2O4)₂12H2O
This one is tricky. C2O4 is a bidentate ligand. 2 of them makes a total of four sites. But is O cosidered a ligand or a fixed oxide?  I'm not 100% sure but I don't think it  is a coordination ligand.  Is H2O (12 of them) a ligand?  I think its water of crystallization by the way it's written, not ligand.
So, eq wt = MW/4

Oh yes is water of Crystalization.

[ssssss]

Ok this is what My course material say about Equivalent weights.Tell is this correct to follow..

Equivalent weight of elements=Mol wt/valency

Equivalent weight of compound=Mol wt/Total charge on cationic or anionic part

Equivalent weight of salt is similar to that of compound,no need to consider the water of crystalization.

Equivalent weight of ions=Mol Wt/charge on ion


Yet to Do the redox reaction Topic.Eq Wt. in Redox reactions is somewhat more Complex than Simple reactions.

Thanks