Homework Answers
1) In column chromatography, separation of the analyte depends upon the polarity of the stationary and mobile phases i.e intermolecular forces exist between the analyte, mobile and stationary phases.
Fluorenone is more polar than fuorene because of the presence of carbonyl group in fluorenone. Fluorenone will bind to the polar stationary phase more strongly and therefore, travel more slowly than fluorene.
The structure and the the representative TLC diagram is given below:
2) Acetone is comparatively polar because of partial negative charge on the oxygen atom. Therefore, acetone tend to speed up the rate.
Add Answer to:
Answer both please
Why does fluorenone travel more slowly than fluorene? Why does acetone speed up...
Why in the nitration of naphthalene does the product 1-nitronaphthalene make more product than 2-nitronaphthalene. Please...
Why in the nitration of naphthalene does the product 1-nitronaphthalene make more product than 2-nitronaphthalene. Please explain.
LAB 2A SEPARATION OF LIQUIDS BY SIMPLE DISTILLATION ANALYSIS BY GAS CHROMATOGRAPHY LAB 2A Pre-Lab Questions...
LAB 2A SEPARATION OF LIQUIDS BY SIMPLE DISTILLATION ANALYSIS BY GAS CHROMATOGRAPHY LAB 2A Pre-Lab Questions NAME DATE LAB SECTION Answer the following questions in the pre-lab section of your notebook. 1. Which compound, acetone or 1-propanol, has the higher boiling point? Why? 2. Do you expect acetone to be soluble in 1-propanol? Why or why not? Model: For this question, you will be graded on completion, rather than correctness of the model. In the post-lab, you will be asked...
PLEASE ANSWER ALL. I will give thumbs up and leave a good comment if answers are...
PLEASE ANSWER ALL. I will give thumbs up and leave a good comment
if answers are accurate. NOTE: Please explain clearly in words.
Please be detailed.
The combination of these two carbonyl systems can give an aldol product. Part 1. Will more than one enolate form? Part 2. What kind of base would you use? (NaOH or LDA) Why? Part 3. If you were in the lab running this experiment, which reagent (2,2-dimethylpropanal or phenylacetaldehyde) should you add slowly to...
Please answer the polymers questions below clearly. 1. Discuss (no more than one page) the dif-...
Please answer the polymers questions below clearly.
1. Discuss (no more than one page) the dif- ference in the nature of the glass transition and the crystalline melting point. 2. Explain (no more than one page) why polymers crystallize in a folded chain form. (A picture is worth a thousand words!) 3. In Figure 10-50 in the text, the chain struc- tures of isotactic polystyrene and isotactic polypropylene were compared. We then asked you which of these polymers has the...
Answer both for best answer 1. ) In April 1974, Steve Prefontaine completed a 10 km...
Answer both for best answer 1. ) In April 1974, Steve Prefontaine completed a 10 km race in a time of 27 min, 43.6 s. Suppose "Pre" was at the 7.85 km mark at a time of 25.0 . If he accelerated for 60 s and then maintained his increased speed for the remainder of the race, calculate his acceleration over the 60 s interval. Assume his instantaneous speed at the 7.85 km mark was the same as his overall...
1. In both the sodium iodide test and the silver nitrate test, why does 2-bromobutane react faster...
1. In both the sodium iodide
test and the silver nitrate test, why does 2-bromobutane react
faster than 2-chlorobutane?
Bromine is a better leaving group since it is a weaker base than
chlorine is.
2. a. Why does benzyl chloride react under both
SN1 and SN2 conditions?
Benzyl
chloride is a primary alkyl halide, hence reactive under SN2
conditions.
The
primary carbocation formed due to the departure of Cl- is
stabilized by the pi electrons in the benzene ring.
b. Why is...
if applicacable, please write clear stepwise mechanism for all synthetic transformations, showing important internediates where appropriate....
if applicacable, please write clear stepwise mechanism for all
synthetic transformations, showing important internediates where
appropriate. only do this if applicable for this lab.
Experiment SD Column Chromatography Running the Reaction. Once sodium borohydride has been added to the reaction meture Isee next paragraph take samples at the times just indicated. Because this must be done in such a short time you must be well prepared before starting the reaction. One person should be the timekeeper, and the other person...
Written Question #1: Storm clouds may build up large negative charges near their bot- tom edges....
Written Question #1: Storm clouds may build up large negative charges near their bot- tom edges. The earth is a good conductor, so the charge on the clouds attract positive charges on the earth under the cloud. The electric field strength near the earth de- pends on the shape of the earth's surface, as we can explain with a simple model. The top metal plate in the figure has a uniformly distributed negative charge. The bottom plate is overall neutral...
Please make sure these both are correct I keep getting different answers, make sure it is...
Please make sure these both are correct I
keep getting different answers, make sure it is not wrong the
answer you give. THANKS
Reaction 1 below occurs very slowly, while reaction 2 below occurs much more rapidly: 1. O2(g) → 20 (9) 2. Ar(g) + O2(g) → Ar(g) + 2O(g) Q9.1 2 Points a. Ar(g) can be viewd as a catalyst in reaction 2, as it accelerates the reaction, but is neither created nor destroyed by the reaction. Which of...
***Please explain why you chose your answer*** Which of the following is NOT true? a)...
***Please explain why you chose your answer*** Which of the following is NOT true? a) The surface tension of CH3CH2NH3 is higher than that of both CH3CHO and CCl4. b) Water has a higher viscosity at a given temperature than does CH3CH2CH2CH2CH3, and for both substances, the viscosity decreases when the temperature is raised. c) The cohesive forces between water molecules are stronger than the adhesive forces of water molecules to glass, which leads to...
LAB 2A SEPARATION OF LIQUIDS BY SIMPLE DISTILLATION ANALYSIS BY GAS CHROMATOGRAPHY LAB 2A Pre-Lab Questions NAME DATE LAB SECTION Answer the following questions in the pre-lab section of your notebook. 1. Which compound, acetone or 1-propanol, has the higher boiling point? Why? 2. Do you expect acetone to be soluble in 1-propanol? Why or why not? Model: For this question, you will be graded on completion, rather than correctness of the model. In the post-lab, you will be asked...
PLEASE ANSWER ALL. I will give thumbs up and leave a good comment
if answers are accurate. NOTE: Please explain clearly in words.
Please be detailed.
The combination of these two carbonyl systems can give an aldol product. Part 1. Will more than one enolate form? Part 2. What kind of base would you use? (NaOH or LDA) Why? Part 3. If you were in the lab running this experiment, which reagent (2,2-dimethylpropanal or phenylacetaldehyde) should you add slowly to...
Please answer the polymers questions below clearly.
1. Discuss (no more than one page) the dif- ference in the nature of the glass transition and the crystalline melting point. 2. Explain (no more than one page) why polymers crystallize in a folded chain form. (A picture is worth a thousand words!) 3. In Figure 10-50 in the text, the chain struc- tures of isotactic polystyrene and isotactic polypropylene were compared. We then asked you which of these polymers has the...
1. In both the sodium iodide
test and the silver nitrate test, why does 2-bromobutane react
faster than 2-chlorobutane?
Bromine is a better leaving group since it is a weaker base than
chlorine is.
2. a. Why does benzyl chloride react under both
SN1 and SN2 conditions?
Benzyl
chloride is a primary alkyl halide, hence reactive under SN2
conditions.
The
primary carbocation formed due to the departure of Cl- is
stabilized by the pi electrons in the benzene ring.
b. Why is...
if applicacable, please write clear stepwise mechanism for all
synthetic transformations, showing important internediates where
appropriate. only do this if applicable for this lab.
Experiment SD Column Chromatography Running the Reaction. Once sodium borohydride has been added to the reaction meture Isee next paragraph take samples at the times just indicated. Because this must be done in such a short time you must be well prepared before starting the reaction. One person should be the timekeeper, and the other person...
Written Question #1: Storm clouds may build up large negative charges near their bot- tom edges. The earth is a good conductor, so the charge on the clouds attract positive charges on the earth under the cloud. The electric field strength near the earth de- pends on the shape of the earth's surface, as we can explain with a simple model. The top metal plate in the figure has a uniformly distributed negative charge. The bottom plate is overall neutral...
Please make sure these both are correct I
keep getting different answers, make sure it is not wrong the
answer you give. THANKS
Reaction 1 below occurs very slowly, while reaction 2 below occurs much more rapidly: 1. O2(g) → 20 (9) 2. Ar(g) + O2(g) → Ar(g) + 2O(g) Q9.1 2 Points a. Ar(g) can be viewd as a catalyst in reaction 2, as it accelerates the reaction, but is neither created nor destroyed by the reaction. Which of...
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