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What mass of an aqueous solution that is 79.9 mass percent (w/w) HCl would use t

ID: 1000600 • Letter: W

Question

What mass of an aqueous solution that is 79.9 mass percent (w/w) HCl would use to prepare a 2.3300 kg aqueous solution of 5.370 mass percent (w/w) HCl? *Using answer: how much water (in kg) would you add to get the final necessary amount and concentration given in orginal question? What mass of an aqueous solution that is 79.9 mass percent (w/w) HCl would use to prepare a 2.3300 kg aqueous solution of 5.370 mass percent (w/w) HCl? *Using answer: how much water (in kg) would you add to get the final necessary amount and concentration given in orginal question? *Using answer: how much water (in kg) would you add to get the final necessary amount and concentration given in orginal question?

Explanation / Answer

Mass of solution=2.330kg=2330g

Mass% of HCl=5.370%

Mass of HCl required=2330*5.37/100=125.121g

79.9g HCl is present in 100g solution

125.121gHCl will be present in 100*125.121/79.9g solution=156.60g solution

Mass of H2O in solution=156.6-121.12=31.48g

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