A bottle in lab is labeled [CoCl2.6H2O] = 0.673 M in 4.542 M HCl. If you...
A bottle in lab is labeled [CoCl2.6H2O] = 0.673 M in 4.542 M HCl. If you determine [CoCl42-] to be 0.42 M at a particular temperature using absorbance measurements, what must be the value of [Co(H2O)62+] in the solution at that temperature? Express your response to three digits after the decimal.
Homework Answers
initial [CoCl2.6H2O] = 0.673M
[CoCl42-] = 0.42M
Since number of moles of Co2+ will remain same. Co2+ ions are present in either of these complexes.
[Co(H2O)62+] + [CoCl42-] = initial [CoCl2.6H2O] = 0.673M
[Co(H2O)62+] = 0.673M - 0.42M = 0.253 M (answer)
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