stoichiometry problems.... (1 Viewer)

[eLmo]

I can't get the right answer for this question:
Calculate the concentration of anions in a solution prepared by dissolving 0.585 grams of nickel(II) bromide in sufficient water to produce 100.0 mL of solution.

any help/explaination would be great thanks.

 

[kini mini]

Originally posted by eLmo
I can't get the right answer for this question:
Calculate the concentration of anions in a solution prepared by dissolving 0.585 grams of nickel(II) bromide in sufficient water to produce 100.0 mL of solution.

any help/explaination would be great thanks.

AFAIK all bromides are soluble, so you need to find the number of moles of bromine in the nickel (II) bromide. You can do this by dividing 0.585g by the molar mass of NiBr2 and then taking percentages to work out the moles of bromine anions that will appear in the solution. Then concentration is moles per litre .