A chemistry student weighs out 0.204g of ascorbic acid H2C6H6O6, a diprotic acid, into a 250.mL...

A chemistry student weighs out 0.204g of ascorbic acid H2C6H6O6, a diprotic acid, into a 250.mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1800M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Round your answer to 3 significant digits.Answer in mL

Expert Solution

queen_honey_blossom answered 2 years ago

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A chemistry graduate student is given 250.mL of a 0.10M chlorous acid HClO2 solution. Chlorous acid is a weak acid with Ka=1.1x10^−2. What mass of NaClO2 should the student dissolve in the HClO2 solution to turn it into a buffer with pH =2.40? You may assume that the volume of the solution doesn't change when the NaClO2 is dissolved in it. Be sue your answer has a unit symbol, and round it to 2 significant digits.

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A chemistry graduate student is given 300.mL of a 1.10M benzoic acid HC6H5CO2 solution. Benzoic acid is a weak acid with Ka=6.3x10^−5. What mass of KC6H5CO2 should the student dissolve in the HC6H5CO2 solution to turn it into a buffer with pH =4.40? You may assume that the volume of the solution doesn't change when the KC6H5CO2 is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits

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A CHEM 2242 student dissolved 69.322 g of an unknown monoprotic acid in a 250 mL volumetric flask. The student then transferred 5.00 mL of this solution into a conical flask and diluted the 5.00 mL with another 85.00 mL of DI H2O. Using the second derivative method the student estimated that equivalence occured when 36.86 mL of 0.1066 M NaOH titrant had been added. What is the molarity of the unknown acid solution?

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A vitamin C (ascorbic acid) tablet was dissolved in approximately 50 mL of distilled water and...

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