ng to the laboratory. PULLU 5 5 C To assist you in finishing early it is recommended that you answer the questions a...
calculate the molarity of KIO3 solution prepared
lowed the same procedure as outlined in this experiment and you have obtained the Assume that you have followed the sa following data: Mass of KIO3 used Volume of KIO3 solution prepared 0.8000 g Volume of unknown ascorbic acid solution 250.0 mL Volume of KIO3 solution used to reach endpoint 15.00 mL 13.25 mL
Your ticket will appear here once you na ve correctly ans w ered an or ше реао quesuon. Prelab for Experiment 6- Titration of an Unknown Acid In this prelab, answers to questions l and 2 should be reported toateastisennoantngurs Scientific notation format 2.34E 4. The 'E' must be capitalized." The prelab questions mirror those that you will be doing at the end of the experiment. Bring your work for this prelab assignment to lab and you will have a...
What are volumetric pipets and burets and what are they used for? 1. 2. To what volume are you to record the values from the buret? 3. 0.3811 g sample of KOH will just neutralize what volume of 0.2000 M HS02 Write the balanced chemical equation. a. b. What volume of 0.2000 M H SO, will just neutralize the KOH sample? 4. In a experiment similar to yours, a solution is prepared by adding 4.512 g of slaked lime also...
answer (2)
2. Suppose that you used a known concentration (0.8442 M) of Ca(OH)2 to determine the concentration of an unknown HBr solution. If it takes 12.88 mL of the Ca(OH)2 solution to titrate 15.00 mL of the unknown HBr solution, what is the molarity of the HBr? 1. A solid diprotic weak acid, H2A (molecular weight = 128.9 g/mol) is used to standardize a KOH solution. When 0.4228 g of the acid is dissolved in 40.0 mL of water...
what is the pH of .10 M solution of HCL
Name - TA - Laboratory Date - Section Experiment 10-Post-lab Questions 1. What is the pH of a 0.10 M solution of HCI? 2. If 50 mL of 0.10 M HCl is diluted to a total volume of 100 mL by adding distilled water, what is the HCl concentration in the new solution? 3. How many moles of NaOH are required to neutralize all of the HCl in the 100...
could i see the steps for these 3 questions ?
thank you !
Acid/Base Titration Problems 6. 20.0 mL of HNO, is titrated with 0.10 M NaOH. After adding 70.0 mL of NaOH, it turned pink. What is the molarity of nitric acid? 7. Ascorbic acid is titrated to an endpoint by 14.5 mL of 0.467 M NaOH. How many mg of ascorbic acid are in each pill? (MW of ascorbic acid = 176.1 g/mol) *Hint: ascorbic acid is monoprotic...
Vitamin C or Ascorbic acid (C6H8O6) is a water soluble vitamin. A solution is prepared by dissolving 80.5 g of Ascorbic acid in 210 g of water. The resulting solution has a density of 1.22 g/ml. Calculate the concentration of Ascorbic acid in terms of a) Mass Percent b) Mole fraction c) Molality d) Molarity
Lab Section Name Date Prelaborator laboratory Problems - Experiment 3-Acids and Bases: Analysis 1.- The ti Hesa, + 2004 the titration of 25.0 mL of a sulfuric acid solution of unknown concentration requires selo ml of a 0.1234 MNOH solution. What is the concentration of the sulfuric acid 0.1234 U Wa Ohm 0.03224 Na Son +2460 3.859548X10" mokes Da OH 2. 10.00 mL of vinegar (mass10.05 g) requires 16.20 end point. Calculate the molarity and mass per 0.05 g) requires...
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...
Laboratory Questions Circle the questions that have been assigned. 1. Part A.1. The KIO, sample was not sur klo, sample was not sufficiently dried. Will the reported molar concentration of the KIO, solution (Part B.3) be too high, too low, or unaffected? Explain. 2. Part A.1. The mass of KIO, used to prepare he mass of KIO, used to renare the solution was measured to be 0.585 g instead of the calculated 0.535 a. Will the molar concentration of th...