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A solution was prepared by dissolving 0.1927 g of HgO (see the Primary Standards table) in...

A solution was prepared by dissolving 0.1927 g of HgO (see the Primary Standards table) in 20 mL of water containing 4 g of KBr. Titration with HCl required 17.96 mL to reach a phenolphthalein end point. Calculate the molarity of the HCl.

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Answer #1

first write the balanced reaction.

then using reaction find the limiting Reagent

then find the moles of OH- formed.

then using M1V1 = M2V2

find the concentration of HCl.

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