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Aqueous hydrobromic acid HBr will react with solid sodium hydroxide NaOH to produce aqueous sodium bromide...

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Chemistry

Aqueous hydrobromic acid HBr will react with solid sodiumhydroxide NaOH to produce aqueous sodium bromide NaBr and liquidwater H2O .

Suppose 60. g of hydrobromic acid is mixed with 48.8 g of sodiumhydroxide. Calculate the minimum mass of hydrobromic acid thatcould be left over by the chemical reaction. Be sure your answerhas the correct number of significant digits.

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4.2 Ratings (819 Votes)

HBr (aq) + NaOH   -----------------> NaBr (aq) + H2O (l)

   80.9 g          40 g                              102.9 g        18 g

60.0 g          48.8 g                             

here HBr is the limiting reagent.

80.9 g HBr ----------------> 40 g NaOH

       ??          -----------------> 48.8 g NaOH

mass of HBr = 48.8 x 80.9 / 40 = 98.7 g

we need 98.8 g HBr. but here we have only 60.0 g HBr. so this is limiting reagent.

no HBr will left over. all consumed
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