Answer in Organic Chemistry for Malek #267918
The reaction between the unknown Ni-salt and dimethylglyoxime can be expressed by the following chemical equation:
[NiA • 6H2O] + H2dmg + 2OH–(aq) = Ni[dmg]2 ↓ + 8H2O
NiA • 6H2O is unknown Ni-salt (which is hexahydrate and A is unknown anion)
H2dmg is dimethylglyoxime
Ni[dmg]2 is bis(dimethylglyoximato)nickel complex which is insoluble in water
You successfully isolated and dried Ni[dmg]2 and got the mass of 1.1899 g.
What is the molecular mass of the unknown NiA • 6H2O salt if you were given 1.3451 g of the salt?
Suppose the mass of sample is 100 g.
The mass of water is 21.8 g.
The mass of anhydrous salt N
The formula to calculate moles is as follows:
The molar mass of water is 18.01 g/mol.
The molar mass of nickel chloride is 128.69 g/mol