Prelaboratory Assignment: Qualitative Analysis Group II Cations 1. Prepare a complete flow chart for the procedure and put it on your data sheet.
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- Need help filling this out. It is the Data Sheet for Ch. 2 Qualitative Analysis. Very much appreciated!Instructions: Refer to the photo below. Answer the ff: c. At equivalence point d. Past the equivalence pointI would need help writing a plan and understanding the experiment: An unknown solid sample is given to you. It is a mixture of KHP & NaCl. Your goal is to find % of KHP in this given unknown sample. Given: Standardized NaOH (made last week) Unknown KHP Sample Computer with pH probe- Logger Pro-Vernier program Digital Burette pH meter
- Draw flow chart for the extraction of mixture containing a. Acid and Base Acid and Neutral Base and NeutralWhen taking a measurement with a pH meter, keep the instrument in the Choose...storage solution or water until it is needed. Rinse the pH meter with Choose...deionized water or acetone and gently pat dry. Place the meter in the sample solution, and record the measurement when the pH Choose...stabilizes or reaches the maximum value .Describe the challenges involved in qualitative analysis. Despite the challenges, do you think this is a useful technique?
- Sources of Error Determine the relationship between the observed/apparent value (EX) VERSUS that of the true value (ET) for the quantity being sought by writing either <, >, or = on the space provided TOPIC: Determination of Molar Concentration of each component (Double Indicator Titration)1. No blank correction Ex _______ET2. Bubbles trapped in the tip of burette: EX ______ ET3. Measuring the sample volume using a volumetric pipet while looking downwards at the meniscus: EX _____ ETou let your partner do a trial since you're nice. He/she adds a few mL of NaOH, but you realize that nobody recorded the initial buret level! RATS! What do you do? a) Just get light pink since that's the point of titrations anyways. b) Finish the titration and record the final buret reading. Ask your instructor what the initial buret reading was since he knows all of them by heart...right? c) Just record the current level as the "initial" reading. Precision isn't THAT important. d) Restart the trial since you have no idea how much NaOH was added so far.Using a pH meter, verify that 100 mL of distilled water is neutral.Dissolve 50.0 mg of naproxen drug substance, accurately weighed, in 50 mL of methanol. Add 25 mL of the neutralized water and mix. Add two drops ofphenolphthalein as the indicator. What is the blank sample in this experiment? How many sample and blank titrations are required for this experiment? Use the equation below to calculate your expected end-point volume. Each mL of 0.01 N sodium hydroxide is equivalent to 2.303 mg of naproxen,C14H14O3
- Trial 1: Initial pH= 3.92mL Mass of KHP and Paper= 0.868g Mass of paper= 0.357g Mass of KHP= 0.511g Trial 2: Initial pH= 4.09ml Mass of KHP and Paper= 0.870g Mass of paper= 0.359g Mass of KHP= 0.511g 1)Use Kb, the number of moles of C8H4O4^2- at the equivalence point, and the total volume at that point to calculate the pH for each sample at the equivalence point. Compare these calculated results with the experimental results.1.Determine the color of the indicator in a given condition: METHYL ORANGE IN AN ACIDIC ENVIRONMENT. 2.This is the measure of reproducibility of data within a series of results. 3.This is the chemical to be subjected to testing in titrimetric method of analysis. 4.Determine the type of assay employed for this substance: TARTARIC ACID 5.Determine the color of the indicator in a given condition: PHENOLPHTHALEIN IN AN ALKALINE ENVIRONMENT. Please help me answer this questions. the answers are on the image I attachedHello sir, I just want a solution without explanations and a clear line