Solution:
The limiting reagent is the reagent whose number of moles is minimum. Thus, according to calculated number of moles, the number of moles of cis- stilbine in table 1and pyridimium tribromide in table 2 are minimum.
Thus,
1) Cis-stilbine is limiting reagent
Number of moles of cis stilbine = 0.0017 mol
Hence, theoretical number of moles of product = 0.0017 mol
Molar mass of product = 340.05 g /mol
Theoretical mass of product = number of moles x molar mass of product
= 0.0017 mol x 340.05 g/mol = 0.5780 g
Percent yield = (actual mass /theoretical mass) x 100
= (0.5780 g / 2.6 g) x 100 = 22.23 %
2) Pyridinium tribromide is the limiting reagent.
Number of moles of pyridinium tribromide = 0.0022 mol
Hence, theoretical moles of product = 0.0022 mol
Theoretical mass of product = number of moles x molar mass
= 0.0022 mol x 340.05 g/mol = 0.748 g
Percent yield = (0.6 g / 0.748g ) x100 = 80.21%
help with limiting reagents and percent yield needed the reactions are the bromination of cis-stilbene and...
1) Write a stepwise mechanisms for the bromination of: a) trans-stilbene and b) cis-stilbene (substitute benzene rings by Ph-notation for convenience; e.g., stilbene could be written as Ph- CH=CH-Ph). I 2) Use (S) and (R) nomenclature to label all stereogenic centers in the above products (each has two stereogenic centers) in problem 1. Identify any enantiomers and meso-products. 3) Complete the following table including formula weights and grams and moles of reagents used in order to calculate a theoretical yield...
Please find theoretical yield and limiting reagent for both reactions. Thanks! Reactions and/or chemicals of interest: HBr Rr+ 1-hexene 1-bromohexane Br 2-bromohexane Molar Mass: .llolmo Volume used: S. Volume used: 1:0 ml Concen Concentration: _ 1.8 M Density: 0.6730mL Moles: - Boiling Point: 6.3°C Since both products have the same molar mass, calculate the yield of the mixture of both products. Moles: Molar Mass: 105.07! gimur Limiting Reagent: Theoretical Yield: X + HBr - X 3,3-dimethyl-1-butene 1-bromo-3,3-dimethylbutane 2-bromo-3,3-dimethylbutane Br 2-bromo-2,3-...
Physical Properties of Regents and Products Name Structure and Formula Molar Mass (g/mol) (g/mL) Melting PL (C) Boiling PL. () (1) Ethyl acetoacetate (2) Sucrose (3) Disodium hydrogen phosphate (4) Sodium borohydride (5) Ethyl-3- hydroxybutyrate Quantities of Reagents Used and Products Formed Structural Formula Mass Moles Volume (ml)
Physical Properties of Regents and Products Name Structure and Formula Molar Mass (g/mol) Density (g/mL.) Melting Pl(C) Boiling PL. (°C) (1) Ethyl acetoacetate (2) Sucrose (3) Disodium hydrogen phosphate (4) Sodium borohydride (5) Ethyl-3- hydroxybutyrate Quantities of Reagents Used and Products Formed Structural Formula Moles Volume Volume (mL) Mass
number 5 please EXPERIMENT 8: BROMINATION OF TRANS-STILBENE glacial acetic acid Objective: Execute first step of two-step sequence to transform an alkene into an alkyne via a dihalide intermediate and use infrared spectroscopy to identify functional groups 5. Identify the limiting reagent for the reaction and explain why it is the limiting reagent. PLEASE NOTE: You will need to draw out a Table of Reagents in your notebook to ensure that you know how many moles of each reagent you...
here is the procedure if needed EXPERIMENT 8: BROMINATION OF TRANS-STILBENE glacial acetic acid Objective: Execute first step of two-step sequence to transform an alkene into an alkyne via a dihalide intermediate and use infrared spectroscopy to identify functional groups PRELAB NOTEBOOK: In the laboratory notebook, write the overall experimental objective, chemical equation(s), reaction mechanism (consider all possible stereoisomers), draw a diagram or outline of the procedural steps, and complete the chemical safety table for all chemicals. 1. Why is...
number 5 please EXPERIMENT 8: BROMINATION OF TRANS-STILBENE Br3 Br glacial acetic acid Br Objective: Execute first step of two-step sequence to transform an alkene into an alkyne via a dihalide intermediate and use infrared spectros copy to identify functional groups 5. Identify the limiting reagent for the reaction and explain why it is the limiting reagent. PLEASE NOTE: You will need to draw out a Table of Reagents in your notebook to ensure that you know how many moles...
please help with the calculations and limiting reagent\percent yeild!!! molarity of FeCl3 is .40 g/mol we had 5.0 mL of FeCl3 (0.40g/mL) which equals 0.08g divided by 162.2g FeCl3 which equals 0.000493 moles or 4.9 x 10^-4 EXPERIMENT REPORT SHEET Synthesis of KzFe(C204)3.3 H20 15.0 mL 4a5a watch glass 43.958 : paper Experimental Data Volume of FeCl, solution Mass of K C,04H2O Mass of product 47.891 Calculations Moles of FeCl3 Moles of K C2O4 H2O Moles of product (KsFe(C204)3.3 H20)...
please help with filling out this table and answering 8 questions Data Table Br H CH2CH3OH N-H Bry Chemicals H (E)-Stilbene Ethanol Pyridinium tribromide CsH.Br3N Stilbene Dibromide C14H12Br2 Molecular Formula C14H12 CHO Molecular Weight 180.25 g/mol 46.07 g/mol 319.82 g/mol 340.06 g/mol Physical Properties White solid Clear liquid White solid White solid Melting Point 122-124 °C N/A 127-133 °C 241-243 °C Amount needed 0.25 g 10 mL 0.5 g Mole needed 1.39 mmol 1.56 mmol Amount Used Moles Used Amount...
1. Based on rhe amount of reagents, which reagent is the limiting reagent. 2. what is the struckture of B-alanine 1. Based on the amounts of reagents used in this experiment, which reagent is the limiting reagent? What is the theoretical yield (in grams) of trans-4-methoxycinnamic acid? Show all of your work. (Hint: Solvents and catalysts cannot be a limiting reagent) 2. Write a complete curved arrow mechanism for the first phase involved in the synthesis of Ho он CHyo...