Homework Answers
Answer:
b. Less energy is required to break water- water interactions and sulphuric acid- sulphuric acid interaction than is released when water- sulphuric acid forms.
Because when we add sulphuric acid to water large amount of energy is released because the reaction occuring is highly exothermic in nature.
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D. Addition of sulfuric acid to a flask of water is observed to increase the temperature...
If the enthalpy of solution in water is exothermic which of the following MUST be true:...
If the enthalpy of solution in water is exothermic which of the following MUST be true: The energy required to form solvent-solute interactions is small. OA Adding heat to the solution will increase the solubility of the solute. ОВ. The energy required to break solvent-solvent interactions is small. Ос. The solute is a gas. OD The enthalpy change from forming solute-solvent interactions is greater than the enthalpy changes from breaking solvent-solvent and breaking solute-solute interactions combined. OE.
Chemical bonds (MC) For all of the problems below put the letters corresponding to all the...
Chemical bonds (MC) For all of the problems below put the letters corresponding to all the correct answers for each question. Note you will lose credit both for not including a correct answer AND for including an incorrect one. A. Choose the answer or answers that correctly complete the following sentence. An O-P bond in ATP is referred to as a "high energy phosphate bond". Which of the following statements are true about that bond? 1. The bond is a...
Thank you very much in advance. Emrah Acetic acid and ethanol react to form ethyl acetate and water, like this: Imagine 53. mmol of HCH, CO, are added to a flask containing a mixture of HCH,CO...
Thank you very much in advance.
Emrah Acetic acid and ethanol react to form ethyl acetate and water, like this: Imagine 53. mmol of HCH, CO, are added to a flask containing a mixture of HCH,CO, CH,OH, C,H,CO,CH, and H,0 at equlbnum, and then answer the following questions. O zero. What is the rate of the forward Greater than zero, but less than the rate of the reverse reaction. reaction before any HCH,002 has been added to the lask? O...
the weight if the initial product was 3.4 grams of methyl benzoate. Who |o yald foR 3.91SSg st prodoc...
the
weight if the initial product was 3.4 grams of methyl
benzoate.
Who |o yald foR 3.91SSg st prodoct nd product 2.14143 EXPERIMENTAL PROCEDURE SAFETY WEAR nitrile gloves for this experiment. The nitrating moture of sulfuric acidnitric acid (1:1) is a very strong acid system. Do not allow it to come in contact with your skin or clothing. It will cause acid burns if it comes in contact with your skin (and holes an your clothes). Wash any affected area...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
Exercise 2 Separation of a Mixture Based on Acid-Base Properties One purpose of this exercise is...
Exercise 2 Separation of a Mixture Based on Acid-Base Properties One purpose of this exercise is to learn how to use a separatory funnel to extract a single component away from other compounds in solution. To do so, we will apply the principles of solubility and acid-base behavior you’re seeing in class. One of the compounds is neutral in the acid-base sense. It has no ability to either donate or accept a proton from an aqueous solution, and will remain...
PREPARATION OF PHARMACEUTICALS - Fischer Esterification Reactions Q: Calculate the expected mass of both methyl salicylate and aspirin assuming 100% yield. EXPERIMENT7 PREPARATION OF PHARMACEUTICALS...
PREPARATION OF PHARMACEUTICALS - Fischer Esterification
Reactions
Q: Calculate the expected mass of both methyl salicylate and
aspirin assuming 100% yield.
EXPERIMENT7 PREPARATION OF PHARMACEUTICALS Fischer Esterification Reactions Almost 2500 years ago, physicians such as Hippocrates recommended that patients chew on the bark of the willow to alleviate pain. The active ingredient in willow bark was found to be salicin, a compound made of a molecule of salicyl alcohol bonded to a p-D-glucose molecule. In the stomach, the bond between...
2)Which of the A)peptidoglycan B)cellulose C)glycogen D)chitin 3 Which of the following is true of fluorescence...
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(C) Protonation of alkene to form a carbocation followed by addition of bromide ion (D) Addition...
(C) Protonation of alkene to form a carbocation followed by addition of bromide ion (D) Addition of the proton to one face of the alkene with simultaneous delivery of a bromide ion from a different molecule of H-Br. 11. Which compound is the strongest nmucleophile for reaction of methane methanesulfonate (CHOS0.CH) in methanol at room temperature? (You may assume that everything is soluble in methanol) (A) potassium bromide (B) cesium iodide (C) sodiam chloride (D) lithium flaoride 12. Which proton...
. Grignard Reagents and As (Addition, Nucleophil ic) Additions Magnesium metal spontaneously reduces organohalides via...
.
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If the enthalpy of solution in water is exothermic which of the following MUST be true: The energy required to form solvent-solute interactions is small. OA Adding heat to the solution will increase the solubility of the solute. ОВ. The energy required to break solvent-solvent interactions is small. Ос. The solute is a gas. OD The enthalpy change from forming solute-solvent interactions is greater than the enthalpy changes from breaking solvent-solvent and breaking solute-solute interactions combined. OE.
Chemical bonds (MC) For all of the problems below put the letters corresponding to all the correct answers for each question. Note you will lose credit both for not including a correct answer AND for including an incorrect one. A. Choose the answer or answers that correctly complete the following sentence. An O-P bond in ATP is referred to as a "high energy phosphate bond". Which of the following statements are true about that bond? 1. The bond is a...
Thank you very much in advance.
Emrah Acetic acid and ethanol react to form ethyl acetate and water, like this: Imagine 53. mmol of HCH, CO, are added to a flask containing a mixture of HCH,CO, CH,OH, C,H,CO,CH, and H,0 at equlbnum, and then answer the following questions. O zero. What is the rate of the forward Greater than zero, but less than the rate of the reverse reaction. reaction before any HCH,002 has been added to the lask? O...
the
weight if the initial product was 3.4 grams of methyl
benzoate.
Who |o yald foR 3.91SSg st prodoct nd product 2.14143 EXPERIMENTAL PROCEDURE SAFETY WEAR nitrile gloves for this experiment. The nitrating moture of sulfuric acidnitric acid (1:1) is a very strong acid system. Do not allow it to come in contact with your skin or clothing. It will cause acid burns if it comes in contact with your skin (and holes an your clothes). Wash any affected area...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
PREPARATION OF PHARMACEUTICALS - Fischer Esterification
Reactions
Q: Calculate the expected mass of both methyl salicylate and
aspirin assuming 100% yield.
EXPERIMENT7 PREPARATION OF PHARMACEUTICALS Fischer Esterification Reactions Almost 2500 years ago, physicians such as Hippocrates recommended that patients chew on the bark of the willow to alleviate pain. The active ingredient in willow bark was found to be salicin, a compound made of a molecule of salicyl alcohol bonded to a p-D-glucose molecule. In the stomach, the bond between...
2)Which of the A)peptidoglycan B)cellulose C)glycogen D)chitin 3 Which of the following is true of fluorescence microscopy? A) Fluorescence microscopy is best at viewing rounded, thicker specimens B) Fluorescent light is emitted throughout the specimen due to fluorescent dyes conjugated to antibodies. C) Fluorescence microscopy is used to view dead specimens only. D) Fluorescence microscopy presents images in three dimensions. E) Fluorescence microscopy is able to overcome problems encountered with using confocal scanning microscopy. 4)While synthesizing a new green pigment,...
(C) Protonation of alkene to form a carbocation followed by addition of bromide ion (D) Addition of the proton to one face of the alkene with simultaneous delivery of a bromide ion from a different molecule of H-Br. 11. Which compound is the strongest nmucleophile for reaction of methane methanesulfonate (CHOS0.CH) in methanol at room temperature? (You may assume that everything is soluble in methanol) (A) potassium bromide (B) cesium iodide (C) sodiam chloride (D) lithium flaoride 12. Which proton...
.
Grignard Reagents and As (Addition, Nucleophil ic) Additions Magnesium metal spontaneously reduces organohalides via a succession transfers. This results in the Grignard 'insertion reaction, as proposed in the 1920s single electron Procedure t was only Part A: Preparation of the Glassyware and Magnesium successful in ether solvents, and failed utterly n hydrocarbons such as benzene. 1. The Grignard reagent camot form in the presence of water, and any water that it comes Mg (solid) into contact with immed iately...
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