Experiment 3

Analytical Chemistry Laboratory Experiment: Determination of Iron Content in Water Samples by Visible Spectroscopy

Calculate the initial concentrations of S2O8^-2 and I^- ions in Experiments 1, 2, and 3. Use the dilution formula M1 x V1= M2 x V2. Show all calculations.

Using the data collected in Table 1 fill in the blanks of Table 2

Please help me full out the table and that’s it thank you

PLEASE GO THROUGH AND HELP ME. IT TAKES SO MUCH OF MY TIME AND I CAN'T HANDLE THE STRESS   https://drive.google.com/file/d/1824fGKn1AMdByzDsSLq8Nv323rpC4e79/view?usp=sharing

Pls do fast within 5 minutes and i will give like for sure Solution must be in typed form To plan a liquid–liquid extraction we need to know the solute’s distribution ratio between the two phases. One approach is to carry out the extraction on a solution that contains a known amount of solute. After the extraction, we isolate the organic phase and allow it to evaporate, leaving behind the solute. In one such experiment, 1.235 g of a solute with a molar mass of 117.3 g/mol is dissolved in 10.00 mL of water. After extracting with 5.00 mL of toluene, 0.889 g of the solute is recovered in the organic phase. If we extract 20.00 mL of an aqueous solution that contains the solute using 10.00 mL of toluene, what is the extraction efficiency?

my results are the first pic

Stoichiometry: Prolonged exposure of some functionalities to the eluent (methanol) in this experiment may lead to undesirable reactions. In one case, Acetylsalicylic acid (Aspirin) can react with methanol to form salicylic acid and methyl acetate. If 800 mg of Acetylsalicylic acid and 1 mL of Methanol undergoes such a side reaction (known as "Methanolysis") to completion: (a) write a balanced equation (draw all molecules instead of writing chemical formulas), (b) what is the limiting reagent? (c) predict the grams of salicylic acid and methyl acetate to be produced in this process. Show calculations. Hint: you can determine the grams of 1 mL of Methanol through its density.

Complete the reagent table (check procedure for acid concentration) and calculate the theoretical yield. Calculate/discuss the percent yield. How efficient was the reaction? Are there any key areas in this experiment that caused a significant drop in yield? [Discussing how product was lost in the reaction rather lost in transfer steps will get the most points here] Information: 11 mmol of 2-methylcyclohexanol. 1.3 mL of 9 M sulfuric acid. Actual Yield: 0.626 grams.

how do i calculate the Theoretical and % yield using this table?

What about Part C? Additionally for part B I'm not really getting the bottom of the 2nd page where have the Chemical Reaction written. Wouldn't it be better to set9.15 + log((7.5mM - 1.25mM)/17.5)? So don't need to know equation?

The following data were collected for the reaction 2A + 2B + C 3G+ 4 F Experiment 2 3 4 5 [A] Units of Molarity .00125 .00250 .00125 .00125 .00301 [B] Units of Molarity 00125 .00125 00302 00302 .00100 [C] Units of Molarity 00125 .00125 .00125 00375 .00115 Rate Units M/s 00870 .0174 .0508 .457 a. What is the order with respect to each reactant and what is the overall order for the reaction? Answer this question within the answer box and show your work clearly labeled on the scratch paper. b. Write the rate law for the reaction. Answer this question within the answer box and show your work clearly labeled on the scratch paper. c. What is the value and units for k? Answer this question within the answer box and show your work clearly labeled on the scratch paper. d. Predict the rate for experiment 5, you should give a value and units. Answer this question in the answer box and show your work on the scratch paper labeled clearly.

E PAP Chem G diagram sh x H PAP Chemi x G Reactions t x K PAP Chemi: x I PAP Chemi x b ar-2903012.agilixbuzz.com/student/135113422/activity/c412d902-b23e-4202-b813-76alf9f4c196 I Student Ap x Session Tir X Mp Rocking WX Mastery Assess It_8 200% + Reset PAP Chemistry-2903012-42100. Enrique Solis All changes saved 3. Reactions that occur in the gaseous state are affected by changing the volume of the container. Which choice best describes what will happen to the reaction if the volume of the container is decreased? The reaction will speed up. The reaction will shift left. The reaction will not change. SAVE & EXIT NEXT The reaction will shift right. 3 of 25 PREVIOUS

needing help please

V. Error Analysis/Questions For the following questions explain what specific error in calculating your Ksp value would occur (i.e. would the Ksp be too HIGH or too LOW), compared to the situation in which no errors occur. When you answer the question, consider how the situation affects the calculation of Ksp. Each answer must have an explanation and type the answer, please. A. The buret was not conditioned (it still had water in it) when you add the HCl. Would the Ksp be too HIGH or too LOW? B. There was Ca(OH)2 solid (that was not filtered off) in your solution to be titrated. Would the Ksp be too HIGH or too LOW? C. You measured 24.00 mL of Ca(OH)2 solution instead of 25.00 mL. Would the Ksp be too HIGH or too LOW? D. The HCl concentration was actually lower than the reported molarity on the bottle. Would the Ksp be too HIGH or too LOW?

Only 100% sure experts solve it correct complete solutions need to get full marks it's my quiz okkkk.take your time but solve full accurate okkk chemistry expert solve it

state why in lab,we have to count initial reading of maleic acid at 2.0g ,and initial reading of filter paper? why fumaric acid have higher melting point at 300 degree celsius? is it ideal? and why maleic acid have less melting point 155 degree celsius. why is percentage yield in conversion of maleic acid to fumeric acid at 25.315%? what is the reason we use yield in this experiment.Assume that equilibrium concentrations were achieved in the experiment.Which acid is stable. Explain all.

Can anyone please help me with this problem please ?I am stuck!(This question is not a part of any graded assignment) So Please help me

Answer all questions please

7 and 8 only

Table 11.1 (data) m Test 15-cm Test Tube 10-cm Test Tube Tube Amount of KIO3 Trial Number Amount of Water Amount of NaHSO3 oln Reaction Time 20 drops 20 drops 20 drops 35 drops 30 drops 20 drops 5 drops 1:26 10 drops l0:42 20 drops 1:21 2 3 Table 11.2 (report) oncentration ria Number Concentration Reaction-Rate Change Reaction Rate Change betweern Trials 1 and 2 betweern Trials 1 and 3 2 3

Can you show

Please help me I am trying to study for an upcoming final and was confused on some of the practice problems.

A) Using the Data Graph below (with the equation for the best fit line), Camculate the concentration of a solution with an absorbance of 0.385.  B) Write the KC Expression for the Lab's Reaction.

Part D One of these liquids is used as a "blowing agent" in the manufacture of polystyrene foam because it is so volatile. Which liquid would you expect to be used as a blowing agent? Match the words in the left column to the appropriate blanks in the sentences on the right. Reset Help Pentane is used as the "blowing agent" because it has a boiling point and is Ethylene glycol volatile low high Submit Request Answer < Return to Assignment Provide Feedback 6:16 PM O 4) 12/12/2021 amazon B. Mastering. Spotify Free 65°F

Laboratory Questions (edited) Put answers on a separate piece of paper and provide enough room for instructor comments. 1. Based on the procedure of this experiment, explain the effect of the following actions on the assessed masses of the components indicated. Where indicated, also address the effect on the percent recovery (Part D of the experiment). The choices include: lower, higher, no effect or could be higher or lower. If the answer could be higher or lower, provide a detailed explanation. a) Sublimation of NH4CI was not complete. How does this situation affect the calculated mass of NH4CI and the percent recovery? b) While decanting, some of the salty water was spilled onto the lab bench. How does this situation affect the calculated mass of NaCl and the percent recovery? c) While decanting, some of the sand was inadvertently transferred to the second evaporating dish. How does this situation affect the masses of NaCl and sand (SiO2) and the percent recovery? d) While weighing…