An analytical chemist weighs out 0.268 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 0.1500 M NAOH solution. When the titration reaches the equivalence point, the chemist finds she has added 26.6 mL of NaOH solution. Calculate the molar mass of the unknown acid. Round your answer to 3 significant digits.

An analytical chemist weighs out 0.268 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 0.1500 M NAOH solution. When the titration reaches the equivalence point, the chemist finds she has added 26.6 mL of NaOH solution. Calculate the molar mass of the unknown acid. Round your answer to 3 significant digits.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Suppose 10.9 g of sodium iodide is dissolved in 200. mL of a 0.40 Maqueous solution of silver nitrate. Calculate the final molarity of iodide anion in the solution. You can assume the volume of the solution doesn't change when the sodium iodide is dissolved in it. Be sure your answer has the correct number of significant digits. OM x10 X Ś
In a titration experiment, 29.1 mL of 0.953 M HCOOH neutralizes 23.2 mL of Ba(OH)₂. What is the concentration of the Ba(OH), solution? Round your answer to 3 significant digits. M 0x10 X 5
A chemistry student weighs out 0.170 g of citric acid (H₂CH₂O₂), a triprotic acid, into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1700 M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits. 0mL x10 X
A student prepares a 0.38 mM aqueous solution of acetic acid (CH3CO₂H). Calculate the fraction of acetic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits. 11 % 0.0 x10 X S 0 E
A buret is used to measure the volume of FeCl3 aqueous solution. The starting volume is recorded to be 5.28 mL. The ending volume is recorded as 17.44 mL. What is the total volume of FeCl3 solution dispensed?
Suppose 4.47 g of barium acetate is dissolved in 350. mL of a 69.0 m M aqueous solution of ammonium sulfate. Calculate the final molarity of barium cation in the solution, You can assume the volume of the solution doesn't change when the barium acetate is dissolved in it. Round your answer to 3 significant digits. | M
A chemist prepares a solution of calcium bromide (CaBr.) by measuring out 140. g of calcium bromide into a 450. ml. volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's calcium bromide solution. Round your answer to 3 significant digits. molt 0.8 X
Deionized water is added to 138.0 mL sample of 1.103 M oxalic acid to dilute it to 0.436M. What volume of water, in milliliters, was added to dilute the sample? Enter your answer in the box, rounded to the correct number of significant figures.
A 195 mL sample of ocean water contains 7.0 gg of NaCl. What is the molarity of the solution with respect to NaCl ? Express your answer using two significant figures.
A chemistry student weighs out 0.0176 g of formic acid (HCHO2)into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1300 M(molarity) NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Round your answer to 3 significant digits.
A chemistry student weighs out 0.0281 g of chloroacetic acid (HCH,CICO,) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1400 M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits. ||mL x10
If you titrate 25.00 ml of a 410. mg/L ascorbic acid solution and titrate it with 1.38x10 M KIO, what volume of titrant (ml) will you use? Please ensure that you include units (ml). Please report your answer to the correct number of significant figures. Answer: If you titrate 25.00 ml of a 480. mg/t ascorbic acid solution, boil it for 15 minutes and then titrate it with 125 mt of 1.34x10 M KIO, What is the concentration of Vitamin C in mg/g ascorbic acid ( original) (mg/9? Answer: And finally, If you boil 26.97 g of juice and then titrate it with 10.55 ml. of 1.16x10 M KIO, what is the concentration of vitamin C in mg per gram of juice (mg/g)? Piease remember to include units (mg/g) of Please remember to use the correct number of significant figures. tion Answer: