Homework Answers
potassium phthalate molar mass = 204.22 g / mol
Moles of potassium phthalate = mass / molar mass = 0.6657 / 204.22 = 3.26 * 10-3 moles
we have the condition: moles of potassium phthalate = moles of NaOH
3.26 * 10-3 = molarity * 24.11 * 10-3
Solving, molarity = 1.35 * 10-1 M
Q 7 :
Mass of sodium = mass % sodium / 100 * mass of salt = 39.3 / 100 * 171.7 = 67.48 g
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QUESTION 6 0.6657 g of potassium hydrogen phthalate require 24.11 ml of a particular sodium hydroxide...
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A student is asked to standardize a solution of potassium hydroxide. He weighs out 0.907 g potassium hydrogen phthalate (KHCgH404 treat this as a monoprotic acid) It requires 28.6 mL of potassium hydroxide to reach the endpoint. A. What is the molarity of the potassium hydroxide solution?M This potassium hydroxide solution is then used to titrate an unknown solution of hydrobromic acid B. If 178 ml of the potassium hydroxide solution is required to neutralize 19.0...
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