Jenny prepared NaOH solution by dissolving 1.5g of NaOH pellets in enough water to make 485mL of solution. Lea made the standardization of the NaOH solution that Jenny has prepared. She made use of 0.454N hydrochloric acid as titrant. She obtained 45mL aliquot of the NaOH solution and titrated it with 8mL hydrochloric acid. After obtaining the exact concentration of NaOH solution that Jenny has prepared, Peter used this solution to obtain the acidity of a 20mL vinegar sample. He used 48 mL of the NaOH solution. (a) What is the approximate normality of the NaOH solution that Jenny prepared? (b) What is the exact normality of the NaOH solution that Jenny prepared? (c) What is the acidity of the vinegar sample?
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Jenny prepared NaOH solution by dissolving 1.5g of NaOH pellets in enough water to make 485mL of solution. Lea made the standardization of the NaOH solution that Jenny has prepared. She made use of 0.454N hydrochloric acid as titrant. She obtained 45mL aliquot of the NaOH solution and titrated it with 8mL hydrochloric acid. After obtaining the exact concentration of NaOH solution that Jenny has prepared, Peter used this solution to obtain the acidity of a 20mL vinegar sample. He used 48 mL of the NaOH solution.
(a) What is the approximate normality of the NaOH solution that Jenny prepared?
(b) What is the exact normality of the NaOH solution that Jenny prepared?
(c) What is the acidity of the vinegar sample?
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