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18 Nov 2019
I did number 3. How do I do number 4?
3. A 25.00 mL portion of the solution prepared in the preceding problem istrated to the end point with 13.60 mL of sodium hydroxide. Use reaction, the concentration and volume of the oxalic acid solution and the end point of the titration to calculate the concentration of the sodium hydroxide solution. the balanced chemical equation for the titration ã·185/n A 0.429 g portion of a monoprotic (one reactable hydrogen ion) solid acid was dissalved in approximately 25 mL of water in an Erlenmeyer flask. After the addition of one drop of phenolphthalein indicator solution, the titrand solution was titrated with the standardized NaOH solution described in problem 3. The end point of the titration was 17.65 mL. a) By using HA to represent the acid, write the balanced chemical equation for the titration reaction. b) Use the concentration of NaOH calculated in problem 3 and the endpoint volume to calculate the number of moles of the titrated acid. c) Use the mass of the weighed acid and the number of moles of the acid to calculate the molar mass of the acid. 4. A) -86-
I did number 3. How do I do number 4?
3. A 25.00 mL portion of the solution prepared in the preceding problem istrated to the end point with 13.60 mL of sodium hydroxide. Use reaction, the concentration and volume of the oxalic acid solution and the end point of the titration to calculate the concentration of the sodium hydroxide solution. the balanced chemical equation for the titration ã·185/n A 0.429 g portion of a monoprotic (one reactable hydrogen ion) solid acid was dissalved in approximately 25 mL of water in an Erlenmeyer flask. After the addition of one drop of phenolphthalein indicator solution, the titrand solution was titrated with the standardized NaOH solution described in problem 3. The end point of the titration was 17.65 mL. a) By using HA to represent the acid, write the balanced chemical equation for the titration reaction. b) Use the concentration of NaOH calculated in problem 3 and the endpoint volume to calculate the number of moles of the titrated acid. c) Use the mass of the weighed acid and the number of moles of the acid to calculate the molar mass of the acid. 4. A) -86-
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11 Jan 2023
Beverley SmithLv2
18 Nov 2019
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