For the experiment I started with 3.79g of benzyltriphenyl phosphonium chloride and ended up with 1.624g....
For the experiment I started with 3.79g of benzyltriphenyl phosphonium chloride and ended up with 1.624g. What is my theoretical and percent yield?
Molecular weight of benzyltriphenyl phosphonium chloride: 388.875 g/mol. Density: 1.18 g/cm^3
No chemical reaction given. Please tell me exactly what you need to figure out the answer. Experiment was "Preparation of (Z)- and (E)-stilbenes by a Wittig Reaction"
Homework Answers
Weight of benzyltriphenyl phosphonium chloride = 3.79 g
Number of moles of benzyltriphenyl phosphonium chloride = weight ÷molecular weight
3.79 ÷ 388.875 = 0.00974 moles.
0.00974 moles of benzyltriphenyl phosphonium chloride will give 0.00974 moles of stilbenes
Molecular weight of stilbenes = 180.25 g
The theoretical yield = 0.00974 × 180.25 g . = 1.755 g
Theoretical yield = 1.755 g.
The Percent yield = experimental yield ÷ theoretical yield × 100.
= 1.624÷1.755×100 = 92.53%
Percent yield = 92.53%.
Add Answer to:
For the experiment I started with 3.79g of benzyltriphenyl
phosphonium chloride and ended up with 1.624g....
answer it all please BS132 Experiment 3 2018-2019 The limiting reagent is the reagent which will...
answer it all please
BS132 Experiment 3 2018-2019 The limiting reagent is the reagent which will completely react and so iIs excess. It will therefore be the reagent for which a lower number o present. Compare the respective molar proportions of the reagents used A and B above] and deduce which is the limiting reagent not in f moles are Igiven by Limiting reagent = 1 mark Scale of reaction (i.e. number of moles of limiting reagent used) - mol...
After a wittig reaction I had 0.158 g. My initial weight was 0.97g of benzyltriphenylphosphonium chloride...
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Can someone please help me how to calculate the theoretical yield from this chart? I am...
Can someone please help me how to calculate the theoretical
yield from this chart?
I am so confused
This is the chart that I was given and Distillate V-2 is the
last part of the chart. This is the part of preparation and
reaction of alkene lab, and only using Distillate V-2 not V-1.
Compounds Molecular Density | Amounts moles Weight or used concentration (gm/mL) Cyclohexanol 0.9624 2.1 mL 20 mmol g/mol Phosphoric 97.994 1.88 0.7 ml 0.0134 acid g/mol...
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Question 2&3 Post-Lab: Experiment 9 1. Define the terms diene and dienophile as they apply to...
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2. Why should all of the glassware and the magnesium used for the preparation of the...
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believe I understand how to calculate the limiting reagent (Q1) and
have determined it to be adipic acid. I’m stuck on calculating the
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bullet points of the procedure used to answer the question.
Thanks!
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answer it all please
BS132 Experiment 3 2018-2019 The limiting reagent is the reagent which will completely react and so iIs excess. It will therefore be the reagent for which a lower number o present. Compare the respective molar proportions of the reagents used A and B above] and deduce which is the limiting reagent not in f moles are Igiven by Limiting reagent = 1 mark Scale of reaction (i.e. number of moles of limiting reagent used) - mol...
Can someone please help me how to calculate the theoretical
yield from this chart?
I am so confused
This is the chart that I was given and Distillate V-2 is the
last part of the chart. This is the part of preparation and
reaction of alkene lab, and only using Distillate V-2 not V-1.
Compounds Molecular Density | Amounts moles Weight or used concentration (gm/mL) Cyclohexanol 0.9624 2.1 mL 20 mmol g/mol Phosphoric 97.994 1.88 0.7 ml 0.0134 acid g/mol...
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Need as much help i can get on this!!!!
1. Write a reaction equation for the synthesis of nylon 4,6. (Hint: the reaction equation for making nylon 6,10 is shown at the top of page 2. Make appropriate changes to the reactants to make nylon 4,6.) Но - + H₂N. wit 2. Which side product is formed when sebacyl chloride and hexamethylenediamine react to form nylon? (Hint: In the reaction equation at the top of page 1, which atoms are...
Question 2&3
Post-Lab: Experiment 9 1. Define the terms diene and dienophile as they apply to the Diels-Alder reaction Based on the amount of cyclopentadiene you used, how many grams is this? 2. The cyclopentadiene collected from the retro-Diels-Alder reaction must be kept cooled and used fairly soon. Why? 3. 159 Experiment 9 Cycloadditions: The Dieis-Alder Reaction Lab Report: Experiment 9 Preparation of the Adduct Molecular Weight Reagent Grams Moles 6l6-105 0.076 0.05l Cyclopentadiene S1 maleic Anhydride Maleic anhydride The...
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2. Why should all of the glassware and the magnesium used for the preparation of the Grignard reagent be any 3. What is the role of the anhydrous calcium chloride used in this experiment? 4. Calculate the theoretical yield (in g) of diphenylmethanol in this experiment. Show your work. Bp, ("C) Mp, (°C) Mass mmol Molecular Weight Calmo 157.02 density (g/ml) Volume (mL) bromobenzene 1560 2.7 17.2 benzaldehyde 1.50 .04 106.12 | 178. 1 1 11.56 1.5 14.7 magnesium 0.4...
This is a dry lab assessment for synthesis of Nylon 6,6. I
believe I understand how to calculate the limiting reagent (Q1) and
have determined it to be adipic acid. I’m stuck on calculating the
theoretical yield (Q2) and need some help getting through the
bullet points of the procedure used to answer the question.
Thanks!
1. In the experiment, you are instructed to use 0.500 g of adipic acid and 0.40 g of hexamethylenediamine. Calculate the mmol of each...
synthesis of t-pentyl chloride
this is a prelab, no experimental data
SI ILCI ILURIDE Name Date 1. What is the purpose of adding hydrochloric acid to -pentanol Why do you leave the separatory funnel unstoppered during the addition of hydrochloric acid 3. You have two layers: organic and aqueous. How do you verify which layer is the aqueous 4. -Pentyl chloride is soluble in water. T F 5. What is the formula of sodium bicarbonate? What is the purpose of...
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