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When a sample of 20.0 g of CoCl2 - 6H2O is dried in an oven until dry CoCl2 is obtained what is the mass of dry cobalt chloride?
Wiki User
∙ 11y ago
Equation:
CoCl2.6H2O + heat --> CoCl2 + 6H2O
You have the mass of CoCl2.6H2O, which is 20g.
You know the Mr of CoCl2.6H2O as well:
58.93 + 35.5(2) + 6(18)= 237.93gmol-1 (The 18= H2O)
You know the formula to calculate the no. of moles:
n=mass/Mr, therefore n= 20/237.933 = 0.0841 moles
The ratio of CoCl2.6H2O: CoCl2 is 1:1, therefore CoCl2 has the same number of moles as does CoCl2.6H2O.
So you want the mass of CoCl2? Well you havethe the Mr of it and now you have the no. of moles.
Mr of CoCl2:
58.93 + 35.5(2)= 129.93 (Or you could simply do 237.93 - 6(18) )
Since n=mass/Mr you simply rearrange to get mass by itself. Which is:
mass= n x Mr
Therefore the mass ofCoCl2ismass = 0.0841 x 129.93 = 10.92g (Answer)
Daniel Hajsadr
Wiki User
∙ 11y ago
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Is cobalt 2 chloride ionic?
It is ionic.
What is the type of intermolecular forces in Cl2Co?
The intermolecular forces are ionic for CoCl2 cobalt chloride. For COCl2 Phosgene they are polar covalent.
Is cobalt chloride the same with cobalt dichloride?
Cobalt (I) chloride = Cobalt monochloride = CoCl Cobalt (II) chloride = Cobalt dichloride = CoCl2 Cobalt (III) chloride = Cobalt trichloride = CoCl3
In the presence of water what happens to anhydrous cobalt chloride?
The colour become initially purple and after (with more humidity) pink.
What is the formula for cobalt III nitrite?
Cobalt II has a +2 charge and is written Co2+. Nitrite has a -1 charge and is written NO2-. Therefore, you must have two nitrite anions for every Cobalt II. It is written... Co(NO2)2
What compound is CoCl2?
cobalt II chloride
What is the name of the element COCl2?
Cobalt (II) Chloride
What is the formula mass of cobaltII chloride?
CoCl2 cobaltous chloride or cobalt(II) chloride
What is the ionic compounds of CoCl2?
This compound is cobalt(II) chloride.
Is cobalt 2 chloride ionic?
It is ionic.
What is the type of intermolecular forces in Cl2Co?
The intermolecular forces are ionic for CoCl2 cobalt chloride. For COCl2 Phosgene they are polar covalent.
Is cobalt chloride the same with cobalt dichloride?
Cobalt (I) chloride = Cobalt monochloride = CoCl Cobalt (II) chloride = Cobalt dichloride = CoCl2 Cobalt (III) chloride = Cobalt trichloride = CoCl3
In the presence of water what happens to anhydrous cobalt chloride?
The colour become initially purple and after (with more humidity) pink.
What is the formula for cobalt III nitrite?
Cobalt II has a +2 charge and is written Co2+. Nitrite has a -1 charge and is written NO2-. Therefore, you must have two nitrite anions for every Cobalt II. It is written... Co(NO2)2
What is CuCl3?
if there's that dot in the between the chloride and the water molecule: cobalt (II) chloride hexahydrate.Cobalt(II) Chloride Hexahydrate
Would CoCl2 6H2O cause a chemical reaction?
Cobalt(II) chloride may be a reactant in a chemical reaction.
What is difference between cobaltic chloride and cobaltous chloride?
Cobaltous ion has a +2 oxidation state. Cobaltic ion has a +3 oxidation state Cobaltous chloride: CoCl2 Cobaltic chloride: CoCl3
