Chemistry

The EAN value of [Ti(σ – C₅H₅)₂(π – C₅H₅)₂] is

For how many metals leaching method is used for its concentration of ore
Metals: Cu, Zn, Pb, Al, Au, Ag

The number of Cl = O bond in Chlorous acid is

200ml of 0.5M solution of CuBr₂ was electrolysed using Pt as electrodes with a current of 0.965 ampere in one hour, what is the normality of the remaining CuBr₂ solution assuming no change in volume?

Calculate the volume occupied by 12.0 g of propane gas at 60°C and 740 mm of pressure. (Molecular weight of C = 12 g/mol , H = 1 g/mol ) [R = 0.082 L atm/molK]

How much propyl alcohol must be added to 1.00lt. of water so the solution will not freeze at –15°C ? (K_f of water = 1.86 KKgmol^-1)[d(H₂O) = 1 g/ml and molecular mass of propyl alcohol = 60 g/mol ]

In an estimation of sulphur by carius method, 0.25gm of an organic compound gave 0.35gm of BaSO₄. The mass percentage of sulphur in the compound is (Molecular weight of BaSO₄ = 233 g/mol )

6.84gm Al₂(SO₄)₃ is needed to coagulate 2.5 L of As₂S₃ sol completely in 2.0 hrs. The coagulation value of Al₂(SO₄)₃ in terms of millimoles per litre is:

[Atomic Mass : Al = 27, S = 32].

The incorrect statement for lyophilic colloids is

An ionic compound (A⁺B^-) crystallizes in rock salt structure. If the ionic radii of A⁺ and B^- is 200pm and 400pm respectively, then calculate distance between nearest anions in Å.