trigonal planar
Hypothetically speaking, this has to do with the molecular bonding of ions between the two compounds. i may be off a little bit.
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CoCl2 6H20 is liquid.
Molecular equation: 2NaOH + CoCl2 → 2NaCl + Co(OH)2 Net ionic equation: 2OH- + Co2+ → Co(OH)2
The gram equivalent weight of CoCl2 is calculated by dividing the molar mass of CoCl2 by its valency. The formula weight of CoCl2 is 129.84 g/mol. Since the valency of CoCl2 is 2, the gram equivalent weight would be 129.84/2 = 64.92 g/equiv.
The ionic compound CoCl2 is called cobalt(II) chloride.
There is more than one hydrate. If you are dealing with the dihydrate it is CoCl2 2H2O than it is blue (sorry but the keyboard won't let me put the 1st and last 2 as subscripts nor allow the dot between the two "2"s, similar to the dot used when you multiple 2x3=6 and don't want to use the letter x. This is what is used to make the test strips we give in labs. If you are dealing with the hexahydrate it is CoCl2 6H20 and this is seen as the pink colour of the test strip once exposed to water.
The correct formula for cobalt chloride hexahydrate is CoCl2·6H2O. The dot is used to differentiate between the compound and the water molecules in the crystal structure.
CoCl2 is a pinkish-violet color, while CoCl2·6H2O is a reddish-brown color.
To answer this question you need the molecular weight of CoCl2. CoCl2 molecular weight is 129.84 g/mole 230g CoCl2 divided by the molecular weight 230 g / 129.84 g/mole = 1.77 moles of CoCl2 Multiply the moles by Avagodro's number 1.77 mole * 6.022 X 1023 molecules/mole = 1.07 X 1024 molecules of CoCl2
CoCl2 forms ionic bonds due to the large electronegativity difference between cobalt and chlorine. In CoCl2, cobalt loses two electrons to chlorine atoms, resulting in the formation of Co2+ cations and Cl- anions, which are held together by electrostatic forces.
CoCl2
The name of CoCl2·6H2O is cobalt(II) chloride hexahydrate.
When CoCl2·6H2O is heated, the water molecules are driven off, leaving anhydrous CoCl2. This is a physical change, not a chemical reaction. However, the anhydrous CoCl2 can undergo chemical reactions depending on the conditions and other reactants present.