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in Aspinho ISO: 1.9 DE 4. Describe how and why the ferric chloride test can be...
PRELAB EXERCISE EXPERIMENT 21 Synthesis of Aspirin (Acetylsalicylic Acid) 1. What is the purpose of sulfuric...
PRELAB EXERCISE EXPERIMENT 21 Synthesis of Aspirin (Acetylsalicylic Acid) What is the purpose of sulfuric acid or phosphoric acid used in the acetylation reaction? Use equations to explain this purpose. The procedure calls for cautious addition of water to the reaction mixture while it is still hot. What purpose does the addition of water serve and why should the addition be done while the reaction mixture is hot? Provide an equation for the reaction involved.Using the quantities of salicylic acid and acetic anhydride...
In our experiment we will use three different substrates: 1°, n-butyl chloride; 2°, sec-butyl chloride; and...
In our experiment we will use three different substrates: 1°,
n-butyl chloride; 2°, sec-butyl chloride; and 3°, tert- butyl
chloride, and we will evaluate their reactivity and the rate of the
reaction in an SN1 reaction. We will use an acid-base indicator to
monitor the completion of the reaction and a salt, silver nitrate,
to obtain a precipitate. The success of the reaction is evidenced
by the change in color of the indicator (from orange to red) due to
the...
please give full on brief answers for the three following questions 3. From the CV, how can you determine whether or not a reaction is electrochemically 4. How can you calculate the formal potenti...
please give full on brief answers for the three following
questions
3. From the CV, how can you determine whether or not a reaction is electrochemically 4. How can you calculate the formal potential (Ef) and the number of electrons 5. Why is an auxiliary (counter) electrode used in CV? reversible? transferred (n) in the reaction.
3. From the CV, how can you determine whether or not a reaction is electrochemically 4. How can you calculate the formal potential (Ef)...
Place 3.0 g of salicylic acid in a 125-ml Erlenmeyer flask. Carefully add, stirring constantly, 6...
Place 3.0 g of salicylic acid in a 125-ml Erlenmeyer flask. Carefully add, stirring constantly, 6 mL of acetic anhydride, followed by 10 drops of concentrated sulfuric acid. Swirl the contents of the flask so that the reactants are thoroughly mixed. Stopper the flask with a one- hole cork fitted with an inverted Pasteur pipet to prevent condensation of water in the reaction flask during heating on the steam bath. Heat the flask in a boiling-water or steam bath for...
3. Why was the concentration of catechol in test tube 2 and 4? Caps Lo 448...
3. Why was the concentration of catechol in test tube 2 and
4?
Caps Lo 448 1. I You will determine 2. Why Shift 1 he sequence given in the Ctrl record whether or Activity 6 - Enzyme Inhibition This activity will investigate the inhibition of catechol oxidase by phenylthiourea (PTU). You w PTU is a competitive or noncompetitive inhibitor. 1. Write your hypothesis and prediction. 2. Obtain a bottle of PTU. 3. Using Table 6.1, prepare three experimental tubes....
5. Explain why the stress-strain behaviors of metals measured in a tensile test cannot fully describe...
5. Explain why the stress-strain behaviors of metals measured in a tensile test cannot fully describe true stress-strain behaviors of materials. 6. Why the three point bending test is used to measure the mechanical properties of ceramics? Will the mechanical properties of ceramics be geometry dependent? 7. What is the crystallinity of polymer materials? How this structure gives rise to the unique mechanical properties of polymers? 8. For fibre-reinforced composites, will the material get totally failure after the fracture strain...
Part B 4. Donsity of a solid: Explain how this lalo can be used to test...
Part B 4. Donsity of a solid: Explain how this lalo can be used to test the purity of metals. 9. What would happen to an object if it were submerged in a fluid where the object and fluid ned the same density? Explain 10. Why would it be important to eliminate any air bubbles from sticking to your samples while placed in water?
can you explain both numbers 4 and 5 and give reasons as to why/how the answer was achieved 4. For each reaction, ma...
can you explain both numbers 4 and 5 and give reasons as to
why/how the answer was achieved
4. For each reaction, mark all of the statements below that correctly describe the reaction X1,80 X 14, THX MGOMO H,0 2) H,O, NOH H, Markovnikov addition Anti-Markovnikov addition Syn addition Anti addition Syn and Anti addition Rearrangement acou Rearrangement does not coeur 5. Insert the necessary reagents and product to complete this synthetic pathway. HO Br H2SO, (conc.) H2, Pt heat
someone help me with these 7 questions add a drop of iodine solution. If starch is present, I Wl iodine. The starch...
someone help me with these 7 questions
add a drop of iodine solution. If starch is present, I Wl iodine. The starch-iodine complex is deep blue-violet. Repeat this test with a com- mercial aspirin tablet and with the acetylsalicylic acid prepared in this experiment O N S at is the purpose of the concentrated phosphoric acid used in the first step? What would happen if the phosphoric acid were left out? 2. 1. Wh 3. If you used 250 mg...
Exercise 1: Adding a Test Harness to the Person class To make it easier to test...
Exercise 1: Adding a Test Harness to the Person class To make it easier to test code that you have written for a Java class you can add to that class a main method that acts as a "test harness". A test harness is a main method that includes calls to methods that you wish to test. For convention this main method is the last method of the class. If you have a test harness, you do not need to...
PRELAB EXERCISE EXPERIMENT 21 Synthesis of Aspirin (Acetylsalicylic Acid) What is the purpose of sulfuric acid or phosphoric acid used in the acetylation reaction? Use equations to explain this purpose. The procedure calls for cautious addition of water to the reaction mixture while it is still hot. What purpose does the addition of water serve and why should the addition be done while the reaction mixture is hot? Provide an equation for the reaction involved.Using the quantities of salicylic acid and acetic anhydride...
In our experiment we will use three different substrates: 1°,
n-butyl chloride; 2°, sec-butyl chloride; and 3°, tert- butyl
chloride, and we will evaluate their reactivity and the rate of the
reaction in an SN1 reaction. We will use an acid-base indicator to
monitor the completion of the reaction and a salt, silver nitrate,
to obtain a precipitate. The success of the reaction is evidenced
by the change in color of the indicator (from orange to red) due to
the...
please give full on brief answers for the three following
questions
3. From the CV, how can you determine whether or not a reaction is electrochemically 4. How can you calculate the formal potential (Ef) and the number of electrons 5. Why is an auxiliary (counter) electrode used in CV? reversible? transferred (n) in the reaction.
3. From the CV, how can you determine whether or not a reaction is electrochemically 4. How can you calculate the formal potential (Ef)...
Place 3.0 g of salicylic acid in a 125-ml Erlenmeyer flask. Carefully add, stirring constantly, 6 mL of acetic anhydride, followed by 10 drops of concentrated sulfuric acid. Swirl the contents of the flask so that the reactants are thoroughly mixed. Stopper the flask with a one- hole cork fitted with an inverted Pasteur pipet to prevent condensation of water in the reaction flask during heating on the steam bath. Heat the flask in a boiling-water or steam bath for...
3. Why was the concentration of catechol in test tube 2 and
4?
Caps Lo 448 1. I You will determine 2. Why Shift 1 he sequence given in the Ctrl record whether or Activity 6 - Enzyme Inhibition This activity will investigate the inhibition of catechol oxidase by phenylthiourea (PTU). You w PTU is a competitive or noncompetitive inhibitor. 1. Write your hypothesis and prediction. 2. Obtain a bottle of PTU. 3. Using Table 6.1, prepare three experimental tubes....
5. Explain why the stress-strain behaviors of metals measured in a tensile test cannot fully describe true stress-strain behaviors of materials. 6. Why the three point bending test is used to measure the mechanical properties of ceramics? Will the mechanical properties of ceramics be geometry dependent? 7. What is the crystallinity of polymer materials? How this structure gives rise to the unique mechanical properties of polymers? 8. For fibre-reinforced composites, will the material get totally failure after the fracture strain...
Part B 4. Donsity of a solid: Explain how this lalo can be used to test the purity of metals. 9. What would happen to an object if it were submerged in a fluid where the object and fluid ned the same density? Explain 10. Why would it be important to eliminate any air bubbles from sticking to your samples while placed in water?
can you explain both numbers 4 and 5 and give reasons as to
why/how the answer was achieved
4. For each reaction, mark all of the statements below that correctly describe the reaction X1,80 X 14, THX MGOMO H,0 2) H,O, NOH H, Markovnikov addition Anti-Markovnikov addition Syn addition Anti addition Syn and Anti addition Rearrangement acou Rearrangement does not coeur 5. Insert the necessary reagents and product to complete this synthetic pathway. HO Br H2SO, (conc.) H2, Pt heat
someone help me with these 7 questions
add a drop of iodine solution. If starch is present, I Wl iodine. The starch-iodine complex is deep blue-violet. Repeat this test with a com- mercial aspirin tablet and with the acetylsalicylic acid prepared in this experiment O N S at is the purpose of the concentrated phosphoric acid used in the first step? What would happen if the phosphoric acid were left out? 2. 1. Wh 3. If you used 250 mg...
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