A solution of an unknown monoprotic acid has a mass concentration of 2.8 g L-1. A...
A solution of an unknown monoprotic acid has a mass concentration of 2.8 g L-1. A titration was performed and the concentration was found to be 0.038 mol L-1. What is the molar mass of the unknown monoprotic acid in solution?
Homework Answers
Given
Mass concentration of monoprotic acid is 2.8 g/lit
Molar concentration is 0.038 mol/lit
Formula
Molar concentration = mass / molar mass
0.038= 2.8/ molar mass
Molar mass=73.68
Add Answer to:
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HELP! Part B: Determination of acid ionization constant (K.) and molar mass of an u Concentration...
HELP!
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A solution of NaOH has an unknown concentration. When 1.396 g of potassium hydrogen phthalate (KHP a monoprotic acid frequently used as an analytical standard) is titrated with the sodium hydroxide the end point is 42.54 mL. Use this information to compute the concentration of NaOH in the solution. The molar mass of KHP is 204.22 g mol1. [OH mol L
An analytical chemist weighs out 0.144 g of an unknown monoprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.0900 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 22.2 mL of NaOH solution. Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. mol x 6 ?
HELP!
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...
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