Problem: A 36.0 mL sample of 1.30 M KBr and a 61.0 mL sample of 0.610 M KBr are mixed. The solution is then heated to evaporate water until the total volume is 55.0 mL .How many grams of silver nitrate are required to precipitate out silver bromide in the final solution?

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AgNO3 + NaBr → AgBr + NaNO3

Calculating the mol of KBr in each solution

36 mL 1 L1x103 mL1.30 mol1 L=0.0463 mol KBr61 mL 1 L1x103 mL0.610 mol1 L=0.03721 mol KBr

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Problem Details

A 36.0 mL sample of 1.30 M KBr and a 61.0 mL sample of 0.610 M KBr are mixed. The solution is then heated to evaporate water until the total volume is 55.0 mL .

How many grams of silver nitrate are required to precipitate out silver bromide in the final solution?

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