Question #243834
A solution contains 1.569mg of CoSO4(155.0g/mol)per mm. Calculate
a) the volume of 0.007840M EDTA needed to titrated a 25.00mL aliquot of this solution
1
Expert's answer
2021-09-29T05:00:40-0400

Mass of sulfate = 0.0001569g

Sulfate = mass/molar mass

Number of moles of cobalt = 0.0001569g/155

=0.00000101mol/ml

25× 0.00000101= 0.00002525mol


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