ZuoTi.Pro
Question

Use the schematic diagram provided in your text, Pavia, (Located at the beginning of the experiment,...

Use the schematic diagram provided in your text, Pavia, (Located at the beginning of the experiment, Extraction) of isolating a neutral compound from its acid and base impurities as a sample to sketch a similar diagram, but now start with the addition of 1M HCl instead of 1M NaOH.

If your unknown contained acid impurities answer part a. If it contained base impurity answer part b. For each part, explain using equations.

a. During the step of precipitating acid impurities, why do you change the pH of the solution to be acidic to litmus by the addition of 6M HCl drop-wise?

b. During the step of precipitating base impurities, why did you change the pH of the solution to be basic to litmus by the addition of 6M NaOH drop-wise?

science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

ク H2 Salt

NH2 20 > base

0 0
Add a comment
Know the answer?
Add Answer to:
Use the schematic diagram provided in your text, Pavia, (Located at the beginning of the experiment,...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Organic Chemistry Lab question In the experiment we did acid-base extractions to find impurities. The impurity...

    Organic Chemistry Lab question In the experiment we did acid-base extractions to find impurities. The impurity was either benzoic acid (acid) or 4-chloroaniline (base) So in this experiment we did Acid-Base extraction with an unknown compound. So we had an unknown of 0.150 grams and mixed it with 20 mL of diethyl ether. We placed this in a separatory funnel and added 2mL of 1.0 NaOH solution to the separatory funnel and placed the stopper over the top of the...

  • please solve the hilighted Questions In Activity 1, what happened to the pH of the water...

    please solve the hilighted Questions In Activity 1, what happened to the pH of the water sample as 0.1 M HCl was added? How did this compare to what happened with addition of one drop of 0.1 M HCl to each buffer solution? In Activity 1, why did the pH of the buffer solutions change after the addition of 10 drops of 0.1 M NaOH? NaOH is strong base when its added to the solution, its react with the weak...

  • buffer is HC2H3O2/NaC2H3O2 difference in PH: big change when added to buffer. small change when added...

    buffer is HC2H3O2/NaC2H3O2 difference in PH: big change when added to buffer. small change when added to water. why? why such a bug change when you add an acud or base to water but not to butfer? 1. a) Describe the difference in observed pH changes upon adding a small amount of strong acid or base to 25.0 mL of water vs to 25.0 mL of your buffer. b) Explain why there was a difference. 6.0M HC,H,O, is corrosive. Prevent...

  • For each experiment described below 1) provide the relevant equilibrium reaction or reactions, 2) use LeChatelier's...

    For each experiment described below 1) provide the relevant equilibrium reaction or reactions, 2) use LeChatelier's Principle to explain why the reaction has shifted left (L) or right (R), and 3) answer any other questions. a) To a solution containing 1M Pb(NO3)2, 1 M HCl is slowly added until a white precipitate forms. The mixture is then heated and the precipitate disappears. Is the dissociation of the precipitate endothermic or exothermic? Does the equilibrium constant (Ksp) change when the solution...

  • Use of Extraction to Isolate a Neutral Compound from a Mixture Containing an Acid or Base...

    Use of Extraction to Isolate a Neutral Compound from a Mixture Containing an Acid or Base Impurity. Part 4D Hi guys I had a question about this lab. I am not sure how to create a flow chart for it as well as what chemical equations it needs. please let me know if you need more information. layer. In the Optional Exercise, the sample contains a neutrum base impurity; however, a detailed procedure is not given. If you are assigned...

  • using the procedures, we used dichloromethane as the unknown mixture and i was able to extract...

    using the procedures, we used dichloromethane as the unknown mixture and i was able to extract benzoic acid for an acid, 5-chloro-2-methoxyanaline for a base compound and biphenyl for neutral compound. i don't know if that answers the missing part but if it didn't could you be specific please? thank you! 2. Construct a flow chart of the acid-base extraction you carried out. Use the specific structure of the compounds isolated. Don't use the molecular formula. (15 pts) We used...

  • Part I Color changes of Methyl Violet. We will study the following reaction: HMV (aq) +...

    Part I Color changes of Methyl Violet. We will study the following reaction: HMV (aq) + MV (aq) + H* (aq) yellow greenish-blue violet Step 1. Place about 4 mL of distilled water in a regular test tube. Add two drops of methyl violet indicator. Record the color of the solution. Violet Next, add drop by drop, add 6M HCI. This forces equilibrium to be shifted to the left or right-circle the right answer). Adding HCl changes color from to...

  • unknown solutions A and B are 0.1 M solutions of either HCI or NaOH. According to your pH measurement, which is which...

    unknown solutions A and B are 0.1 M solutions of either HCI or NaOH. According to your pH measurement, which is which 10% Bleach Question: 1. Unknown solutions A and B are 0.1 M solutions of either HCl or NaOH. According to your pH measurements, which is which? 1 2. The pH of pure water is 7. Comment on how closely your measured pH values from each measurement method compared to the expected value. Which method was more appropriate for...

  • please use the information provided to fill out the first sheet (the data) Data Sheet: 1....

    please use the information provided to fill out the first sheet (the data) Data Sheet: 1. Concentration of NaOH ALL volume measurements (in mL) must be recorded using two (2) digits to the right of the decimal or they are wrong. (Watch the significant figures.) SHOW ALL OF YOUR CALCULATIONS ON THE NEXT PAGE. 2. Initial volume of acid in buret (left photo) 3. Final volume of acid in buret (right photo) 4. Volume of acid (#3 #2) 5. Volume...

  • Using Buffers Hands-On Labs, Inc. Version 42-0134-00-02 Lab Report Assistant This document is not meant to...

    Using Buffers Hands-On Labs, Inc. Version 42-0134-00-02 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. Exercise 1: Using Buffers...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT