In the presence of an acid catalyst, cyclohexanol (100.16 g/mol) is dehydrated to give cyclohexane (82.14 g/mol) and water.
A dehydration reaction starting with 3.23.2 g cyclohexanol produces 2.12.1 g cyclohexene.
Calculate the percent yield for this reaction. Report your answer with two significant figures.
In the presence of an acid catalyst, cyclohexanol (100.16 g/mol) is dehydrated to give cyclohexane (82.14...
If cyclohexanol(mw 100) (d=0.8 g/ml) were substituted for 2-methylcycholhexanol, only one product, cyclohexane (d=0.8 g/ml) would be obtained. Distillation of the reaction mixture would occur at 85 C. Assume that the vapor pressures of cyclohexane and water are 152 mm and 608 mm respectively at 85 C. If 0.6 mol of water are obtained in the distillate what is the yield of cyclohexane? Assume that the bp of cyclohexane is 100 C and that cyclohexane is insoluble in water? a)...
CHEM 2032 ORGANIC CHEMISTRY LAB 1 SUMMER 2018 PRE/POST-TEST REAC 712 NAME 1. What safety Precautions must be taken when working with Sulfuric acid (H2S04) and Phosphoric acid (H3PO4)? 2. Briefly explain the following terms: a. Heterolytic bond cleavage b. Dehydration reaction Write the chemical equation for the dehydration of cyclohexanol, showing all reagents and conditions (use structural formula for all organic compounds). 3. Using the following information, calculate the theoretical yield for the dehydration of 3.0 mL of cyclohexanol...
6) Ethylene, 15.00 g, is reacted in water, 100.0 mL, and a phosphoric acid catalyst at 250.0°C to give 8.500 g of ethanol. Calculate the percent yield for this reaction?
Starting with 1.0 g of 1-methylcyclohexanol, you recover 0.5 g of 1- methylcyclohexene. What is the percent yield? 1) 100 2) 30 3) 49 4) 60 Question 3 (2 points) Which of the following cations is most stable? 1) the methyl cation 2) the tert-butyl cation 3) the iso-propyl cation Question 4 (2 points) What is the role of sulfuric acid in today's reaction? Question 4 (2 points) What is the role of sulfuric acid in today's reaction? 1) It...
5. A common observation test to confirm the presence of an alkene (or unsaturation, in general) is the bromine test. a. What was the observation in the bromine test that allowed you to conclude an alkene was present? (3 pts.) b. Write the equation for the reaction between the major alkene produced and bromine. Be sure to show the correct stereochemistry in the product. (3 pts.) 6. A sample of 9.0 mL of cyclohexanol was mixed with 2.0 ml of...
The Williamson ether synthesis between 2‑naphthol (MW 144.2 g/mol) and allyl bromide occurs in dichloromethane solution in the presence of the phase transfer catalyst, PhCH 2 ( Bu ) 3 NCl , and NaOH and produces allyl 2‑naphthyl ether (184.23 g/mol). A reaction was performed in which 0.43 g of 2‑naphthol was reacted with a slight excess of allyl bromide to make 0.46 g of allyl 2‑naphthyl ether. Calculate the theoretical yield and percent yield for this reaction. Allyl bromide...
1. How many moles are contained in 2.50 grams of benzoic acid? Molar mass of benzoic acid: 122.12 g/mol 2. How many mL are in 0.5 grams of cyclohexene? Density of cyclohexene is 0.809 g/ml 3. How many moles are in 250 mL of 2 M sodium hydroxide? 4. If 5.0 mL of 2-methyl-2-butanol are allowed to react with an excess of concentrated hydrochloric acid, what is the maximum mass of 2-chloro-2-methylbutane that can be obtained? 5. An acid-catalyzed dehydration...
3a. Calculate the molar mass (in g/mol) of an unknown 1:1 electrolyte if 0.482 g dissolved in 223.1 mL of water at 74.75 °C has an osmotic pressure of 54.4 mmHg. R = 0.082058 L⋅atm⋅mol−1⋅K−1. 1.00 atm = 760 mmHg. Report your answer to THREE significant figures. 3b. Calculate the required mass of an unknown nonelectrolyte (ℳ = 131.5599 g/mol) dissolved in 140.1 g of solvent that gives a solution that boils at 36.04 °C. The boiling point of the...
Percent yield of chemical reactions Aqueous hydrobromic acid (HBr) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium bromide (NaBr) and liquid water (HO). 189.71 g of water is produced from the reaction of 79.3 g of hydrobromic acid and 70.2 g of sodium hydroxide, calculate the percent yield of water. Round your answer to 3 significant figures. x 5 ?
VII O STOICHIOMETRY Percent yield of chemical reactions Aqueous hydrochloric acid (HCI) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium chloride (NaCl) and liquid water (H,O). If 0.332 g of water is produced from the reaction of 1.1 g of hydrochloric acid and 2.1 g of sodium hydroxide, calculate the percent yield of water. Round your answer to 2 significant figures. 0% x 3 ?