Esters - Mr. Lee`s Science
... Lower melting points and boiling points than carboxylic acids and alcohols (they both have OH groups = stronger) Smaller esters are gases (the ones you smell) and large esters are solids ...
... Lower melting points and boiling points than carboxylic acids and alcohols (they both have OH groups = stronger) Smaller esters are gases (the ones you smell) and large esters are solids ...
IR Spectroscopy of Esters - Purdue College of Science
... attracted to the negatively charged oxygen left behind from the acid. The new product is an ester. Usually the reaction is catalyzed by adding concentrated sulfuric acid because it is a dehydrating agent and helps remove the water molecules as they are formed to keep the reaction going. Traditionall ...
... attracted to the negatively charged oxygen left behind from the acid. The new product is an ester. Usually the reaction is catalyzed by adding concentrated sulfuric acid because it is a dehydrating agent and helps remove the water molecules as they are formed to keep the reaction going. Traditionall ...
Hydrogen gas is produced when magnesium is added to dilute
... 25mL of oxygen gas is produced during an experiment. How many moles of hydrogen peroxide has decomposed? Carbon dioxide is made by adding hydrochloric acid to calcium carbonate. A teacher requires 150mL at NTP. How g of calcium carbonate should he use? CaCO3 + 2HCl -------- CaCl2 + H2O + CO2 ...
... 25mL of oxygen gas is produced during an experiment. How many moles of hydrogen peroxide has decomposed? Carbon dioxide is made by adding hydrochloric acid to calcium carbonate. A teacher requires 150mL at NTP. How g of calcium carbonate should he use? CaCO3 + 2HCl -------- CaCl2 + H2O + CO2 ...
Lecture 11a
... What does the term combined organic layers refer to? The combination of the product and the two ethereal extracts What is the purpose of this step? To neutralize the acids (PhCOOH, H2SO4) in the organic layer How much solution should be used for each extraction? 2 mL per extraction How often should ...
... What does the term combined organic layers refer to? The combination of the product and the two ethereal extracts What is the purpose of this step? To neutralize the acids (PhCOOH, H2SO4) in the organic layer How much solution should be used for each extraction? 2 mL per extraction How often should ...
402 - Sydenham High School
... My thinking on what an acid and a base are has changed from an Arrhenius (ionization) concept to a Bronsted-Lowry (proton-transfer) concept. I still see value in the Arrhenius concept and will continue to use it whenever it is suitable. I now understand the difference between a strong and weak acid ...
... My thinking on what an acid and a base are has changed from an Arrhenius (ionization) concept to a Bronsted-Lowry (proton-transfer) concept. I still see value in the Arrhenius concept and will continue to use it whenever it is suitable. I now understand the difference between a strong and weak acid ...
WM5 The synthesis of salicylic acid and aspirin
... 1898: 2-ethanoylhydroxybenzoic acid (a.k.a acetylsalicylic acid or aspirin) produced ...
... 1898: 2-ethanoylhydroxybenzoic acid (a.k.a acetylsalicylic acid or aspirin) produced ...
3.4.3 Corrosives Corrosive materials are those that cause visible
... their natural dry state are corrosive when wet such as when in contact with moist skin or mucus membranes. Examples of these materials are lithium chloride, halogen fluorides, and allyl iodide. Sulfuric acid is a very strong dehydrating agent and nitric acid is a strong oxidizing agent. Dehydrating ...
... their natural dry state are corrosive when wet such as when in contact with moist skin or mucus membranes. Examples of these materials are lithium chloride, halogen fluorides, and allyl iodide. Sulfuric acid is a very strong dehydrating agent and nitric acid is a strong oxidizing agent. Dehydrating ...
doc - STAO
... with a spout, as shown in the video. The use of this type of bottle reduces the likelihood of spills. It also allows vapours to escape preventing pressure build-up within the bottle. 3. The concentrated sulfuric acid should be dispensed from a glass dropper bottle as shown in the video. Plastic sque ...
... with a spout, as shown in the video. The use of this type of bottle reduces the likelihood of spills. It also allows vapours to escape preventing pressure build-up within the bottle. 3. The concentrated sulfuric acid should be dispensed from a glass dropper bottle as shown in the video. Plastic sque ...
Chemistry Worksheet on Mass Mol and Mol Mass
... solve the problems. Show all work. Draw a rectangle around the answer and don’t forget the units. One in a series of reactions that inflate air bags in automobiles is the decomposition of sodium azide (NaN3) to produce solid sodium and nitrogen gas. NaN3 → ...
... solve the problems. Show all work. Draw a rectangle around the answer and don’t forget the units. One in a series of reactions that inflate air bags in automobiles is the decomposition of sodium azide (NaN3) to produce solid sodium and nitrogen gas. NaN3 → ...
7.2 Acids and Bases
... Acid-base indicators are substances that changes colour depending on whether it is in the presence of an acid or a base. ...
... Acid-base indicators are substances that changes colour depending on whether it is in the presence of an acid or a base. ...
questions on the dehydration of alcohols
... Chemguide – questions ALCOHOLS: DEHYDRATION 1. a) Ethanol can be converted into ethene by passing the vapour over hot aluminium oxide, and collecting the ethene over water. Write the equation for the reaction. b) Ethanol can also be converted into ethene by heating it at 170°C with excess concentrat ...
... Chemguide – questions ALCOHOLS: DEHYDRATION 1. a) Ethanol can be converted into ethene by passing the vapour over hot aluminium oxide, and collecting the ethene over water. Write the equation for the reaction. b) Ethanol can also be converted into ethene by heating it at 170°C with excess concentrat ...
Quiz 1
... a. has a smaller [OH¯] than solution B b. has a larger number of [H+] than solution B c. is more basic than solution B d. is more acidic than solution B e. has the same [OH¯] as solution B 8. Which of the following solutions has the highest pH? a. concentrated sulfuric acid, H2SO4 b. dilute acetic a ...
... a. has a smaller [OH¯] than solution B b. has a larger number of [H+] than solution B c. is more basic than solution B d. is more acidic than solution B e. has the same [OH¯] as solution B 8. Which of the following solutions has the highest pH? a. concentrated sulfuric acid, H2SO4 b. dilute acetic a ...
DRILLING FLUID PRODUCTS - STEARIC ACID PRODUCT
... Stearic acid is used in drilling fluids as a viscosifier and defoamer. It is a type of organic acid derived from animal and vegetable fats and oils. Fatty acids are the raw materials used in the manufacture of many drilling-fluid additives, such as emulsifiers, oil-wetting agents and lubricants. REC ...
... Stearic acid is used in drilling fluids as a viscosifier and defoamer. It is a type of organic acid derived from animal and vegetable fats and oils. Fatty acids are the raw materials used in the manufacture of many drilling-fluid additives, such as emulsifiers, oil-wetting agents and lubricants. REC ...
In the preparation of the esters given in this experiment
... 13. The vapor pressures of 1,2-diphenylethane, p-dichlorobenzene, and 1,3,5trichlorobenzene are 0.06, 11.2, and 1.4 torr, respectively, at their melting point (52-54 degrees C). Which compound is likely to be sublimed most rapidly at a reduced pressure of 15 torr and a temperature of 40 degrees C? 1 ...
... 13. The vapor pressures of 1,2-diphenylethane, p-dichlorobenzene, and 1,3,5trichlorobenzene are 0.06, 11.2, and 1.4 torr, respectively, at their melting point (52-54 degrees C). Which compound is likely to be sublimed most rapidly at a reduced pressure of 15 torr and a temperature of 40 degrees C? 1 ...
Chemistry: Graphing Exercise
... A beaker containing 100 ml of water is heated at a constant rate for 10 minutes. The temperature of the liquid is recorded each minute. A second beaker containing 100 ml of ethanoic acid is heated and monitored under similar conditions. The data are recorded below. ...
... A beaker containing 100 ml of water is heated at a constant rate for 10 minutes. The temperature of the liquid is recorded each minute. A second beaker containing 100 ml of ethanoic acid is heated and monitored under similar conditions. The data are recorded below. ...
Total Nitrogen - WordPress.com
... temperature of the solution does not exceed 400°C. Allow the flask to cool down after the digestion and add about 20ml of water slowly while shaking. Then swirl the flask to bring any insoluble material into suspension and transfer then the contents to the distillation apparatus. Rinse tree time wi ...
... temperature of the solution does not exceed 400°C. Allow the flask to cool down after the digestion and add about 20ml of water slowly while shaking. Then swirl the flask to bring any insoluble material into suspension and transfer then the contents to the distillation apparatus. Rinse tree time wi ...
Fragrant Esters Esters are prepared in a reaction between a
... can prepare esters that produce different scents. Sometimes only small changes are needed to get a completely different fragrance. For example experiment 1 (see below) yields an ester that smells like apple. A slightly longer chain produces an orange scent. Having a branched chain leads to banana oi ...
... can prepare esters that produce different scents. Sometimes only small changes are needed to get a completely different fragrance. For example experiment 1 (see below) yields an ester that smells like apple. A slightly longer chain produces an orange scent. Having a branched chain leads to banana oi ...
+ NaOH 350 C + high P H2O + H3C AlCl3 + NaOH + Br2, FeBr3
... (a) Why is the sulfuric acid necessary? Nitric acid is already acidic, isn’t it? (Note : pKa (Nitric Acid) = -1.5, pKa (Sulfuric Acid) = -10). ...
... (a) Why is the sulfuric acid necessary? Nitric acid is already acidic, isn’t it? (Note : pKa (Nitric Acid) = -1.5, pKa (Sulfuric Acid) = -10). ...
In the preparation of the esters given in this experiment
... 13. The vapor pressures of 1,2-diphenylethane, p-dichlorobenzene, and 1,3,5trichlorobenzene are 0.06, 11.2, and 1.4 torr, respectively, at their melting point (52-54 degrees C). Which compound is likely to be sublimed most rapidly at a reduced pressure of 15 torr and a temperature of 40 degrees C? 1 ...
... 13. The vapor pressures of 1,2-diphenylethane, p-dichlorobenzene, and 1,3,5trichlorobenzene are 0.06, 11.2, and 1.4 torr, respectively, at their melting point (52-54 degrees C). Which compound is likely to be sublimed most rapidly at a reduced pressure of 15 torr and a temperature of 40 degrees C? 1 ...
Palmitic Acid 98% - McKinley Resources, Inc.
... Palmitic acid is mainly used to produce soaps, cosmetics, and release agents. These applications utilize sodium palmitate, which is commonly obtained by saponification of palm oil. Because it is inexpensive and adds texture to processed foods (convenience food), palmitic acid and its sodium salt fin ...
... Palmitic acid is mainly used to produce soaps, cosmetics, and release agents. These applications utilize sodium palmitate, which is commonly obtained by saponification of palm oil. Because it is inexpensive and adds texture to processed foods (convenience food), palmitic acid and its sodium salt fin ...
Homework #7, Graded Answers
... f.) 1,2,4-cyclohexanetriol 19.) Which member of each of the following pairs would you expect to be more soluble in water? Briefly explain your choices. a.) 2-butanol: has hydrogen bonding and is polar b.) 2-propanol: smaller size (less nonpolar area) c.) 2,3-butanediol: has two places to hydrogen bo ...
... f.) 1,2,4-cyclohexanetriol 19.) Which member of each of the following pairs would you expect to be more soluble in water? Briefly explain your choices. a.) 2-butanol: has hydrogen bonding and is polar b.) 2-propanol: smaller size (less nonpolar area) c.) 2,3-butanediol: has two places to hydrogen bo ...
Title - Iowa State University
... b) How many moles of NO are produced by the reaction of 4 moles of copper with excess HNO 3? ...
... b) How many moles of NO are produced by the reaction of 4 moles of copper with excess HNO 3? ...
The SN2 Reaction: 1
... undesirable by-products (alkenes and ethers), and hence the HBr method (1) is preferred for preparation of halides of the types R2CHBr and R3CBr. Primary alcohols are more resistant to dehydration and can be converted efficiently to the bromides by the more economical methods (2) and (3), unless the ...
... undesirable by-products (alkenes and ethers), and hence the HBr method (1) is preferred for preparation of halides of the types R2CHBr and R3CBr. Primary alcohols are more resistant to dehydration and can be converted efficiently to the bromides by the more economical methods (2) and (3), unless the ...
Give formulas of these acids, bases and salts boron silicide
... 1. A solution has a pH of 4 - what does this mean? It is acidic. It is neutral. It is alkaline. 2. Which of the statements below is correct? Bases are acids that dissolve in water. Bases are alkalis that dissolve in water. Alkalis are bases that dissolve in water. 3. A liquid has a pH of 7. What doe ...
... 1. A solution has a pH of 4 - what does this mean? It is acidic. It is neutral. It is alkaline. 2. Which of the statements below is correct? Bases are acids that dissolve in water. Bases are alkalis that dissolve in water. Alkalis are bases that dissolve in water. 3. A liquid has a pH of 7. What doe ...
HW chapter 6
... b. …….PCl3(l) + ....H2O(l) ......H3PO3(aq) + .......HCl(aq) c. …….Cu2O(s) + ……..C(s) ……Cu(s) + …..CO(g) d. …….Na2O2(s) + ……H2O(l) …..NaOH(aq) + O2(g) ...
... b. …….PCl3(l) + ....H2O(l) ......H3PO3(aq) + .......HCl(aq) c. …….Cu2O(s) + ……..C(s) ……Cu(s) + …..CO(g) d. …….Na2O2(s) + ……H2O(l) …..NaOH(aq) + O2(g) ...
Sulfuric acid
Sulfuric acid (alternative spelling sulphuric acid) is a highly corrosive strong mineral acid with the molecular formula H2SO4 and molecular weight 98.079 g/mol. It is a pungent-ethereal, colorless to slightly yellow viscous liquid which is soluble in water at all concentrations. Sometimes, it is dyed dark brown during production to alert people to its hazards. The historical name of this acid is oil of vitriol.Sulfuric acid is a diprotic acid and shows different properties depending upon its concentration. Its corrosiveness on other materials, like metals, living tissues or even stones, can be mainly ascribed to its strong acidic nature and, if concentrated, strong dehydrating and oxidizing properties. Sulfuric acid at a high concentration can cause very serious damage upon contact, since not only does it cause chemical burns via hydrolysis, but also secondary thermal burns through dehydration. It can lead to permanent blindness if splashed onto eyes and irreversible damage if swallowed. Accordingly, safety precautions should be strictly observed when handling it. Moreover, it is hygroscopic, readily absorbing water vapour from the air.Sulfuric acid has a wide range of applications including domestic acidic drain cleaner, electrolyte in lead-acid batteries and various cleaning agents. It is also a central substance in the chemical industry. Principal uses include mineral processing, fertilizer manufacturing, oil refining, wastewater processing, and chemical synthesis. It is widely produced with different methods, such as contact process, wet sulfuric acid process and some other methods.