Exercise 5 Page 5 Illinois Central College CHEMISTRY 130 Laboratory Section: Name: PRELAB: Exp. 5 Chemical Stoichiometry: The Determination of Vitamin C. SHOW YOUR WORK 1. A 0.258 g sample of a powder containing some ascorbic acid required 14.50 mL of 0.100 M NaOH for complete neutralization. Calculate the purity of the ascorbic acid. moles of NaOH used in the titration moles of ascorbic acid reacted grams of ascorbic acid in sample Percent purity of the powder 2 A tablet of Vitamin C weighed 0.306 g and required 15.70 mL of 0.0300 M KIO, solution for oxidation to the blue starch-iodine endpoint. Calculate the percent ascorbic acid in the tablet. moles of KIO, used in the titration moles of ascorbic acid reacted grams of ascorbic acid in tablet Percent ascorbic acid in tablet

Exercise 5 Page 5 Illinois Central College CHEMISTRY 130 Laboratory Section: Name: PRELAB: Exp. 5 Chemical Stoichiometry: The Determination of Vitamin C. SHOW YOUR WORK 1. A 0.258 g sample of a powder containing some ascorbic acid required 14.50 mL of 0.100 M NaOH for complete neutralization. Calculate the purity of the ascorbic acid. moles of NaOH used in the titration moles of ascorbic acid reacted grams of ascorbic acid in sample Percent purity of the powder 2 A tablet of Vitamin C weighed 0.306 g and required 15.70 mL of 0.0300 M KIO, solution for oxidation to the blue starch-iodine endpoint. Calculate the percent ascorbic acid in the tablet. moles of KIO, used in the titration moles of ascorbic acid reacted grams of ascorbic acid in tablet Percent ascorbic acid in tablet

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...

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Fast pls i will give u like for sure solve this question correctly in 5 min pls A student analyzed a CaCO3 antacid tablet by neutralizing the base with an excess of .60 M HCL and back-titrating the excess with .50M NaOH. He recorded the following data: mass of tablet = 1.3g amount of active ingredient CaCO3 per label = 500 mg volume of HCl added: 25 mL initial buret reading : 34 mL final buret reading : 47.4 mL If the concentration of the provided HCl is actually higher than .60M, would the determined mass of CaCO3 in the antacid tablet be too high or too low?
Profiles Tab Window Help p Cengage Learning XAM HOMEWORK Module 9 Back APR 17 html?deploymentid=5735112480241329813180832311&elSBN=9781305862883&id=1707786068&snapshotld-33225... X Submit Answer 18. Oxidation-Reduction Titrations: This is group attempt 1 of 10 MindTap - Cengage Learning X Use the References to access important values if needed for this question. The concentration of H₂C₂O4 in a solution is determined by titrating it with a 0.1796 M permanganate solution. The balanced net ionic equation for the reaction is: tv References 2MnO4 (aq) + 5H₂C₂O4(aq) + 6H30*(aq) → 2Mn²+ (aq) + 10CO₂(g) + 14H₂O(1) - In one experiment, 23.66 mL of the 0.1796 M permanganate solution is required to react completely with 30.00 mL of the H₂C2₂04 solution. Calculate the concentration of the H₂C₂O4 solution. N Autosaved at 10:58 PM I What volume of a 0.352 M hyd X ☎ Q 8 C M A W P U Mon Apr 17 * + Next ☐ X
Fast pls i will give u like for sure pls solve in 2 min pls answer the following: 1) Calculate the percent ionization of 0.15 mol/L hydrofluoric acid, HF. Ka = 6.6 x10-4 2) Determine the pH of a 0.90 mol/L solution of hydrosulfuric acid, H2S
Write the net ionic equation for the acid-base hydrolysis equilibrium that is established when potassium cyanide is dissolved in water. Ac + H20(t) This solution is 16. Submit Answer Retry Entire Group 9 more group attempts remaining red Pred 3rec Visited 2red 2red 2red 2red 5 at (Previous Next Save and Exit nment Cengage Learning | Cengage Technical Support O Focus MacBook Air DII DD 80 888 F8 F9 F6 F7 F3 F4 F5 F1 F2 ! @ 2$ & 4 7 1 Q W E R T Y U. K * 00
Question 1 Why are buffers added to some aspirin products? Edit View Insert Format Tools Table 12pt v Paragraph ▼ IUA ev T?v
Chrome File Edit View History Bookmarks People Tab Window Help * ? 94% Sat 4:31 PM NetNutritiono b Answered: What is the activati 101 Chem101 + A app.101edu.co Update : Question 6 of 47 Submit A solution of citric acid (H3C6H507) with a known concentration of 0.200 M H;C,H;0, is titrated with a 0.750 M NaOH solution. How many ml of NAOH are required to reach the third equivalence point with a starting volume of 25.0 mL H;C6H;0, , according to the following balanced chemical equation: H3C6H5O, + 3 NaOH – Na;C,H;O, + 3 H20 STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 11.25 0.200 0.020 2.00 x 10* 2.22 2 0.001 3 6.67 1 1000 0.750 25.0 20.0 15.0 L NAOH mol H3CgH;O7 LH;CGH;O, mL H;C6H;O, g NaOH mL NaOH M H;C;H;07 M NaOH g H;C6H;O, mol NaOH 9,523 3 étv
Final Exam A sodium hydroxide solution was prepared by dissolving 7 g NaOH in 1 L solution. What is the pH of the solution? M.mass of NAOH = 40 g/mol ge Next page VIOUS ACTIVITY ond exam pe here to search
M Week Nine Ann E Philosophy Pap x 101 Chem101 101 Chem101 101 Chem101 Q Chemistry - Test X G The solubility of x A app.101edu.co Question 8 of 8 Submit What is the primary species in solution at the halfway point in a titration of NH3 with HBr? A) NH3 and H B) NH4+ and H+ C) NH, D) NH3 and NH4* 10:33 PM- 10:33 1 Send a chat
A 25.0 mL solution of HNO₃ is neutralized with 29.6 mL of 0.250 M Ba(OH)₂. What is the concentration of the original HNO₃ solution? Answer : __________ M
What's New Activity 1 Defermine the validity of the following arguments. , Jf the solUtion turns blue itmus paper red, then the solution contains acid The ekution does not contain acid. So, the solution does not turn the blue litmus paper red. 2 Jf the solution turns blue litmus paper red, then the solution contains acid. The solution turns the blue litmus paper red. So, the solution contains acid. 3. If you study hard, you refine your communication skills and build up your confidence. if refining your communication skills build up your confidence, then your job opportunities increase. Hence, if you study hard, your job opportunities increase. 4. Kidnapping is wrong if the society disapproves of it. Kidnapping is wrong. So, society disapproves of kidnapping. 3. If overeating causes disease, then it is not healthy. Overeating does not cause disease. So, overeating is healthy. OPPO A92 · ©jane 2021/11/24 16:47 Key to answer on page 38