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Asked by
janie
Excess Ag+ is added to 50 mL of NaBr soln and precipitated out 22.8 mg of AgBr. What is the original concentration of Br- ion in the solution in ppm?
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Answered by
DrBob222
Convert 22.8 mg AgBr to moles. moles = grams/molar mass.
Since 1 Br^- is in 1 molecule of AgBr, that must be the moles Br^- in the 50 mL.
Convert moles Br^- to grams in the 50 mL.
Now I would convert that to mg/L which will make it in ppm.
Answered by
Anonymous
.005
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