Instructor Name: Student Name: EXP #4: PRE-LAB EXERCISE (there are questions on both sides) 1. Given the following...
please help im so confused
Student Name Instructor Name: EXP #4: PRE-LAB EXERCISE (there are questions on both sides) I. Given the following data, determine the onders (m and m) with respect to the concentrations. of A and B in the reaction A B products Rate- k[A][B) Time for reaction [A [BJ 19 sec 0.020 M 0,020 M 19 sec 0.010 M 0.020 M 76 sec 0.020 M 0.010 M 76 sec 0.010 M 0.010 M Orders: What time would...
Student Name: Instructor Name: DATA (EXP #4) Part 1: Effect of Concentration Time (sec) mL NaHSO3/starch mL water mL KIO3 ai.lolo 50 mL 0 mL 50 mL 7.05 45.80 50 mL 15 mL 35 mL 50 mL 25 mL 25 mL Min 475e (07Seconds 50 mL 35 mL 15 mL Part 2: The Effect of Temperature Time (sec) Temperature Temperature KIO3 Instructor Name: Student Name: DATA ANALYSIS: Part 1: Effect of Concentration: 1. For each trial calculate: The concentration of...
Student Name: Instructor Name: EXP #4: POST-LAB 1. A proposed mechanism for the iodine clock reaction is shown below: Iodine Clock Reaction Mechanism: 1 HSoS0+HIO2 ki-2.95 x 10-1M-'s-1 2-2.0 x 1010 AM-2s-1 ka 1.0 x 105 M-'s-1 ka-3.0 x 105 M-3s-1 HIO2+I +H+2HOI HIO2+ HOI IO +I + 2H+ IO I+2H HIO2 + HOI HOI+I+H I2+H20 ks 3.0 x 1012M-2s-1 I+ H20 HOI+ I +H ke -2.2s-1 I2+HSO+H20+21 +SO- +3H+ -1.0 x 100 M-1-1 where the values of k are...
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...
10.1 Precipitation of Barium Sulfate-Pre-Lab Questions Name Date: Instructor 1. Calculate the formula weight of BaSO4.(Enter unit as g/mol.) 2 What mass of BasO4 is presont in 40.0 mL of a 0.65 M solution? 3. What is the formula weight of Na SO? (Enter unit as g/mol.) 4. What mass of Na SO4 is present in 100.0 mL of a 0.35 M solution? 5. What is the formula weight of BaC2? (Enter unit as g/mol.) 6. You mix 6.0 mL...
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Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1. Why is concentrated sulfuric acid emploved in thie on? What is the electrophile that is produced by the reaction of sulfuric acid and nitric acid? 2. Why is it important to maintain the reaction temperature low and the addition of nitric acid-sulfuric acid mixture carried out slowly? 3. Explain why concentrated H2SO4, not concentrated HC1, was used in this experiment? 4. Which ring of...
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Post-Laboratory Questions-EXP 3 Nitration of Aromatic Compounds Name: Due after completing the lab. 1. Why is concentrated sulfuric acid employed in this reaction? What is the electrophile that is produced by the reaction of sulfuric acid and nitric acid? 2. Why is it important to maintain the reaction temperature low and the addition of nitric acid-sulfuric acid mixture carried out slowly? 3. Explain why concentrated H2SO, not concentrated HCl, was used in this experiment? 4. Which ring of...
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TEST 2, PHYS 1442. Instructor: Dr. G. Kolmakov Student Name Date: 5/1/2018 Notes: 1. Show equations you use and show your work. Answers without work shown will not be given any credit. 2. Box the final answers. 3. Show units in the answers. 4. Maximum point for the test is 100. 1. (10 points) What is the resistance of a 35-meter long wire that has a diameter of 0.812*10- m and is made of copper? The resistivity of copper...
please answer all these questions, thank you.
CHEM 242L Exp. 4 Report/ Synthesis of Oil of Wintergreen Name Score: 20 1) Assess the effectiveness of the experiment and your technique by A) reporting the yield of each step in grams and percent as well as the overall percent yield (What is "overall percent yield?). SHOW ALL CALCULATIONS! B) Give a complete analysis of the identity and purity of your final product and any isolated intermediates 2 What was the purpose...
will work with up to 3 partners (similar to a lab group) to prepare a written report which analyzes kinetic data that has been provided to you. All student groups will receive data for the hypothetical reaction aAlE) products where a is a numeric variable and A is a chemical variable. The reaction therefore has the form of a decomposition reaction, in which a single substance forms one or more new substances. For consistency, all concentrations start out at 1.000...