show your calculations of the number of moles of sodium borohydride required to reduce 0.04 moles...
show your calculations of the number of moles of sodium borohydride required to reduce 0.04 moles of 9-fluorenone to 9-fluorenol. If 0.02 moles of NaBH4 was actually used in a reaction, which reagent would be in excess?
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show your calculations of the number of moles of sodium
borohydride required to reduce 0.04 moles...
What is the minimum number of moles of sodium borohydride required to fully reduce 0.55 grams...
What is the minimum number of moles of sodium borohydride required to fully reduce 0.55 grams of benzophenone? Enter only the number with two significant figures.
0.25 g of propiophenone 100mg of sodium borohydride Reduction of Ketones using Sodium Borohydride Virtual Lab...
0.25 g of propiophenone
100mg of sodium borohydride
Reduction of Ketones using Sodium Borohydride Virtual Lab CHE242----Prelab OH 1) NaBH4/CH3OH Olescente del Conte CH2CH3 Olan.com CH2CH3 2) NaOH Names Pre-Lab Questions 1. How many moles of propiophenone and sodium borohydride will you use in your experi- ment (show calculations)? Which of these two is the limiting reagent? For full credit, you must explain why it is limiting. 2. Draw a detailed reaction mechanism for the reaction (Make sure your mechanism...
1. Because NaBH4 is a mild reducing agent, it must be used with a protic solvent such as methanol to facilitate the reac...
1. Because NaBH4 is a mild reducing agent, it must be used with a protic solvent such as methanol to facilitate the reaction. This results in a side reaction between the borohydride and the methanol resulting in the production of hydrogen gas (the fizzing you observed during the addition of the reagent. Use curly-arrows to show the Bronsted acid-base reaction of one equivalent of BH4 - with methanol. 2. For the reason shown above, a fair excess of sodium borohydride...
Exact mass of sodium bicarbonate: 2.110g Molar mass of sodium bicarbonate: 84.007 g/mol Molar mas...
Exact mass of sodium bicarbonate: 2.110g
Molar mass of sodium bicarbonate: 84.007 g/mol
Molar mass of sodium acetate: 82.034 g/mol
After you have recorded and any other glassware you have used. All waste can go down the sink. the mass of the beaker after the reaction, you may rinse out the beaker 10. CALCULATIONS: a) Rewrite the balanced chemical equation here Calculate the theoretical amount of sodium acetate that should be formed in the reaction (follow steps 1-3 below). b)...
hi, please help me with number 7. thank you EXPERIMENT SEVEN SODIUM BOROHYDRIDE REDUCTION OF ACETOPHENONE...
hi, please help me with number 7. thank you
EXPERIMENT SEVEN SODIUM BOROHYDRIDE REDUCTION OF ACETOPHENONE HOCH, DISCUSSION The reduction of an aldehyde or ketone with sodium borohydride is straight forward and usually affords a high yield of the alcohol. The usual procedure (and the one employed in this experiment) involves dissolving the borohydride in 95% ethanol and adding the carbonyl compound to this solution. To ensure complete reaction, an excess of sodium borohydride is used. The reaction between sodium...
5. (a) Propose a mechanism for the reaction of 2-bromopyridine with sodium amide to give 2-...
5. (a) Propose a mechanism for the reaction of 2-bromopyridine with sodium amide to give 2- aminopyridine (b) When 3-bromopyridine is used in this reaction, stronger reaction conditions are required to give a mixture of 3-aminopyridine and 4-aminopyridine results. Propose a mechanism which explains this curious result 6. Show the formation of the following reduction products, if the reaction proceeds. If not, propose a different reagent to reduce the starting material! NaBH, (b) NaBH4 KOH OH 1.) LAIH 2.) H,00...
Name: Experiment 9: Synthesis of Benzhydrol pre-lab (4 pts) 1) ( pu) Why must the sodium...
Name: Experiment 9: Synthesis of Benzhydrol pre-lab (4 pts) 1) ( pu) Why must the sodium borohydride solution be added slowly to the benzophenone solution? 2) (1 pt) How is the excess sodium borohydride neutralized? 4) (2 pts) The reduction of benzophenone by sodium borohydride is shown below: OH 1. NaBH O 2. HCI 3. H,0 -I MM = 182.22 g/mol MM = 184.24 g/mol A student starts with 4.0 g of benzophenone and adds a sufficient amount of sodium...
Experiment . the reduction of bencil (March 2020) Your name Sodium borohydride is a convert recent...
Experiment . the reduction of bencil (March 2020) Your name Sodium borohydride is a convert recent for the reduction of dehydes and ketones to 1" and 2 alcohols, respectively. The mechanism of the reaction - (below) is straightforward and is driven by boron's affinity for oxygen. In addition, given borohydride's remarkably low reactivity with OH groups under neutral and especially basic conditions, this reaction can be done in alcohol solvents. This means that (unlike LAH or Grignard reactions) no separate...
Analysis of Experimental Data 3. Complete the following steps to determine the percent yield of your...
Analysis of Experimental Data 3. Complete the following steps to determine the percent yield of your synthesis. In each part, be sure to show all your work and use proper significant figures. .7719 Benzhydrol used 9.90 ml Sodium hypochlorite used Mass of product obtained: 0.657 g/ a. Determine the moles of benzhydrol used in your reaction. [0.20] b. Determine the moles of sodium hypochlorite used in your reaction. [0.20] C. Which compound was the limiting reagent in your reaction? [0.20]...
Chem 143 - Lab 46) CALCULATE THE THEORETICAL YIELD Grams of sodium carbonate used Moles of...
Chem 143 - Lab 46) CALCULATE THE THEORETICAL YIELD Grams of sodium carbonate used Moles of sodium carbonate used Grams of calcium chloride used Moles of calcium chloride used Moles of precipitate expected Theoretical yield of precipitate in grams Actual yield of precipitate in grams Percent yield 5.6 Show detailed work for percent yield. Page 4 of 4 Chem 143 - Lab Pre-lab Exercise Show the details of each calculation to get full credit 1. Magnesium oxide, a white powdery...
0.25 g of propiophenone
100mg of sodium borohydride
Reduction of Ketones using Sodium Borohydride Virtual Lab CHE242----Prelab OH 1) NaBH4/CH3OH Olescente del Conte CH2CH3 Olan.com CH2CH3 2) NaOH Names Pre-Lab Questions 1. How many moles of propiophenone and sodium borohydride will you use in your experi- ment (show calculations)? Which of these two is the limiting reagent? For full credit, you must explain why it is limiting. 2. Draw a detailed reaction mechanism for the reaction (Make sure your mechanism...
Exact mass of sodium bicarbonate: 2.110g
Molar mass of sodium bicarbonate: 84.007 g/mol
Molar mass of sodium acetate: 82.034 g/mol
After you have recorded and any other glassware you have used. All waste can go down the sink. the mass of the beaker after the reaction, you may rinse out the beaker 10. CALCULATIONS: a) Rewrite the balanced chemical equation here Calculate the theoretical amount of sodium acetate that should be formed in the reaction (follow steps 1-3 below). b)...
hi, please help me with number 7. thank you
EXPERIMENT SEVEN SODIUM BOROHYDRIDE REDUCTION OF ACETOPHENONE HOCH, DISCUSSION The reduction of an aldehyde or ketone with sodium borohydride is straight forward and usually affords a high yield of the alcohol. The usual procedure (and the one employed in this experiment) involves dissolving the borohydride in 95% ethanol and adding the carbonyl compound to this solution. To ensure complete reaction, an excess of sodium borohydride is used. The reaction between sodium...
5. (a) Propose a mechanism for the reaction of 2-bromopyridine with sodium amide to give 2- aminopyridine (b) When 3-bromopyridine is used in this reaction, stronger reaction conditions are required to give a mixture of 3-aminopyridine and 4-aminopyridine results. Propose a mechanism which explains this curious result 6. Show the formation of the following reduction products, if the reaction proceeds. If not, propose a different reagent to reduce the starting material! NaBH, (b) NaBH4 KOH OH 1.) LAIH 2.) H,00...
Name: Experiment 9: Synthesis of Benzhydrol pre-lab (4 pts) 1) ( pu) Why must the sodium borohydride solution be added slowly to the benzophenone solution? 2) (1 pt) How is the excess sodium borohydride neutralized? 4) (2 pts) The reduction of benzophenone by sodium borohydride is shown below: OH 1. NaBH O 2. HCI 3. H,0 -I MM = 182.22 g/mol MM = 184.24 g/mol A student starts with 4.0 g of benzophenone and adds a sufficient amount of sodium...
Experiment . the reduction of bencil (March 2020) Your name Sodium borohydride is a convert recent for the reduction of dehydes and ketones to 1" and 2 alcohols, respectively. The mechanism of the reaction - (below) is straightforward and is driven by boron's affinity for oxygen. In addition, given borohydride's remarkably low reactivity with OH groups under neutral and especially basic conditions, this reaction can be done in alcohol solvents. This means that (unlike LAH or Grignard reactions) no separate...
Analysis of Experimental Data 3. Complete the following steps to determine the percent yield of your synthesis. In each part, be sure to show all your work and use proper significant figures. .7719 Benzhydrol used 9.90 ml Sodium hypochlorite used Mass of product obtained: 0.657 g/ a. Determine the moles of benzhydrol used in your reaction. [0.20] b. Determine the moles of sodium hypochlorite used in your reaction. [0.20] C. Which compound was the limiting reagent in your reaction? [0.20]...
Chem 143 - Lab 46) CALCULATE THE THEORETICAL YIELD Grams of sodium carbonate used Moles of sodium carbonate used Grams of calcium chloride used Moles of calcium chloride used Moles of precipitate expected Theoretical yield of precipitate in grams Actual yield of precipitate in grams Percent yield 5.6 Show detailed work for percent yield. Page 4 of 4 Chem 143 - Lab Pre-lab Exercise Show the details of each calculation to get full credit 1. Magnesium oxide, a white powdery...
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