PART C: Determining the Molar Mass of an Unknown Acid by Titration: (2 points) Balanced chemical...
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Part B: Determination of acid ionization constant (K.) and molar mass of an u Concentration of NaOH (mol/L) from bottle: 0.1053 Mass concentration of unknown acid (g/L) from bottle: 3.120 pH of unknown acid solution: 228 from pH meter. 1) Titration of unknown acid using indicator only Trial 2 Trial 1 1.593 30.851 090909 ml Mass of empty beaker Mass of beaker + unknown acid solution Mass of unknown acid solution Volume of unknown acid solution Initial volume of...
calculate the molar mass of the unknown acid round your answer
to three significant digits.
An analytical chemist weighs out 0.280 g of an unknown diprotic acid into a 250 ml. volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.1400 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 26.7 ml of NaOH solution Calculate the molar mass of the unknown acid. Round your answer...
Calculate the molar mass of the unknown acid using the titration data: Given: Mass of acid: 0.2128g Volume of NaOH delivered: 8.30 mL Moles acid: 0.2074 mol Molar mass of acid: ?
PRE-LABORATORY QUESTIONS TITRATION OF A DIPROTIC ACID Name Laboratory Instructor Day and time lab meets 1. What is a diprotic acid? (1 pt) 2. Give the balanced chemical reaction for the titration of oxalic acid with NaOH. (1 pts) OH HO- 3. When titrating 25.0 mL of 0.10 M H2SO4 with 0.10 M NaOH, how many mL of NaOH will you have added to reach the first equivalence point? How many mL of NaOH will you have added to reach...
Unknown acid 2 6. Complete the following table. Trial 1 Trial 2 Trial 3 Mass of unknown (8) 0.175 0.120 0.122 Initial buret reading (mL) 0.00 22.37 0.00 Final buret reading (mL) 22.37 44.85 22.83 Volume of NaOH added (mL) 22.37 22.48 22.83 We will assume that the data collected for the first trial is not accurate. 7. What is the average mass of unknown acid for Trials 2 and 3? (Must show calculations) 8. What is the average volume...
To reach the second endpoint for the titration of 10.00 ml of a thiosulfuric acid unknown solution, 14.32ml of 0.08751 M NaOH is needed. Look up the molecular formula for maleic acid and write a balanced chemical equation for its reaction with NaOH. What is the concentration of the thiosulfuric acid solution? 3.
A 0.155 g sample of a diprotic acid of unknown molar mass is dissolved in water and titrated with 0.1268 M NaOH. The equivalence point is reached after adding 13.2 mL of base. What is the molar mass of the unknown acid?
only need answers for 9,10,11
.1016 M NaOH
9. Calculate the molar mass of the unknown diprotic acid. (Must show calculations) ( mol NaOH mol acid L NaOH L NaOH mol NaOH) = mol acid g acid mol acid) = molar mass acid 10. What is the identity or name of the unknown acid 2? 2. 11. Why do we NOT need to measure the pH and create a titration curve (mL of NaOH added versus pH) to determine the...
7) Assume the molar mass of the unknown acid is about 200 g/mol, calculate the mass of unknown needed to react with 25 mL of your NaOH solution. NaOH: 0.1252 g monoprotic g diprotic g triprotic
I need the molar ratio for both of these please help
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Balanced Equation H2S04 + KOH H20 KHSO4 Acid-Base Titration Acid Solution Molar Ratio Volume Concentration H2S04 (unknown) 50 Base (known) KOH 14.05 .1 Titration #2: Balanced Equation NaOH + HI --> Nal + H20 Base-Acid Titration Base Solution Molar Ratio Volume Concentration (unknown) NaOH 50 Acid (known) HI 25.05 .1 é??