A a 05872-gram sample of potassium hydrogen phthalate, Ask an Expert

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(a) A 0.5872-gram sample of potassium hydrogen phthalate (KHC8H4O4) is dissolved in 50.0 mL of solution. What is the molarity of this solution?

(b) The entire solution of "KHP" (abbreviation for "potassium hydrogen phthalate") is titrated with sodium hyroxide solution which concentration is unknown, using phenolphthalein as the indicator 22.90 mL of NaOH solution is used to reach end-point, determine the molar concentration of NaOH.

(c) The same NaOH solution is then used to titrate a 10.00-mL sample of sulfuric acid (H2SO4) of unknown concentration, which requires 25.80 mL of the base to neutraize the sulfuric acid. What is the molarity of H2SO4? The acid base reactions that occur during the two titrations are as follows: (i) KHC8H4O4(aq) + NaOH(aq)--->NaKC8H4O4(aq) + H2O(l); (ii) H2SO4(aq) + 2NaOH(aq)--->Na2SO4(aq) + 2H2O(l)

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Category:- Chemistry
Reference No.:- M9870580

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