A phase transfer catalyst or PTC in chemistry is a catalyst which facilitates the migration of a reactant in a heterogeneous system from one phase into another phase where reaction can take place. Ionic reactants are often soluble in an aqueous phase but insoluble in an organic phase unless the phase transfer catalyst is present. Phase transfer catalysis (also PTC) refers to the acceleration of the reaction by the phase transfer catalyst. Phase transfer catalysts for anion reactants are often
Premium Chemistry Ion Chemical reaction
Abstract The preparation of 7.7-dichlorobicyclo [4.1.0]heptane which is also known as 7‚7-dichloronorcarane was done by reacting cyclohexene ‚ chloroform and a base( 50% aqueous sodium hydroxide) with benzyl triethylammonium chloride. The latter being a water soluble phase transfer catalyst (PTC).reaction was performed at room temperature and was distilled at atmospheric pressure. The mechanism of action of the above mentioned PTC is described in the text along with the mechanism for the addition
Premium Sodium hydroxide Chemistry Sodium
Lab 7: Catalysts Introduction Pre-Lab Questions 1. What is a catalyst? An enzyme is a biological catalyst that speeds up chemical reactions in the body. 2. If you continue to add more catalyst will the speed of a reaction always continue to increase? Explain your answer. It will continue to speed up the reaction until there is more catalyst than the limiting reactant. 3. In this lab you will produce oxygen and water from hydrogen peroxide (H2O2). Write a balanced reaction equation for this reaction
Premium Chemical reaction Chemistry Oxygen
Chapter 9 #1 What are the three basic functions of money? Money is a medium of exchange that is usuable for buying and selling goods and services‚ as a unit of account (monetary units=dollars)‚ and a store of value that allows people to transfer purchasing power from the present to the future. Describe how rapid inflation can undermine money’s ability to perform each of the three functions. Rapid inflation greatly reduces the use of money so money loses its value. Since people only accept money
Free Federal Reserve System Monetary policy Currency
gov. NHTSA’s National Center for Statistics and Analysis. Web. 26 June 2014. 2. Leopold‚ Todd. "Film Legend Herzog Takes on Texting and Driving." CNN.com. N.p.‚ 16 Aug. 2013. Web. 26 June 2014. 3. Part Three 4. Submit the introductory paragraph of 7 to 10 sentences. Be sure to include your claim and briefly
Premium Text messaging A Great Way to Care Public service announcement
7 Daughters 7 Sons Essay The book‚ 7 Daughters 7 Sons by Barbara Cohen‚ Bahija Lovejoy‚ is a good piece of literature. This book is about a girl named Buran‚ who has to live in a far away city to save the lives of her poor family and her sick dad. In this essay‚ I am going to explain why I think this book is a good piece of literature. First‚ I am going to choose a character and explain if it’s a round or flat character. I will explain my opinion with evidence of the book. Next‚ I will be explaining
Premium Chess Fiction Character
Week 7 Digestion Lecture Study Guide Based on information found in the lecture folder or other sources‚ answer the following questions. 1. What is digestion? Digestion is the mechanical and chemical breakdown of food into usable molecules 2. List some other names of the digestive tract. Alimentary Canal (GI Tract) 3. Explain where and how the mechanical breakdown of food occurs. Teeth begin digestion mechanically‚ Chewing (“mastication”) breaks apart food‚ 2 sets
Premium Digestion Digestive system
EXPERIMENT 7: PERCENTAGE OF OXYGEN IN KClO3 Introduction: In this experiment you will determine the percentage of oxygen in potassium chlorate. You will calculate the theoretical value from the chemical formula and compare your experimental value to the theoretical value. Background: When potassium chlorate (KClO3) is heated‚ it undergoes chemical decomposition. Oxygen gas (O2) is given off and potassium chloride (KCl) remains as the residue. The equation for the decomposition of potassium
Premium Chlorine Oxygen Potassium
Chapter 7 David Connor 1. The ____________ motor is the most common motor used in hermetically sealed units. a. Capacitor-start‚ induction run b. Repulsion-start‚ induction run c. Induction run d. Induction run two phase and polyphase 2. Of the four listed motors‚ which is the most commonly used on external drive‚ belt driven compressors? e. Induction two-phase and polyphase.
Premium Electric motor Inductor Voltage
Marketing Problems Midterm Strategy 7‐Eleven is a gasoline service station‚ and considered a Quick service restaurant (QSR). The issue you face Mr. DePinto is in regards to the 6% loss of share in the fresh food categories‚ a category that has allowed 7‐Eleven to gain 39.5% margins. Fresh food sales have been around 50% of total sales. This‚ along with research‚ shows that consumers want fresh‚ natural ingredients. To help the company grow share in the fresh food
Premium Fast casual restaurant Marketing Fast food restaurant