Ester

To improve the yield of the ester the reaction should be heated using a high temperature. This would favour the formation of the products in this reaction, as the formation of an ester (esterification) is an endothermic reaction. Thus use of a high temperature will push the equilibrium to the right hand side, and a larger yield of the ester will be produced. To improve the yield of the Ester the reaction mixture could be refluxed for longer period of time so that more reactants are converted…

Esters have a very sweet fruity smell. Esters are commonly used in the preparation of artificial flavors or fragrances. Flavors and fragrances may utilize a single ester or a mixture of esters and other substances to duplicate the odor and flavor of a particular fruit. Naturally occurring esters are found in fruits. An ester is a product of the reaction of an acid (carboxylic acid) and an alcohol (the hydrogen of the acid R-COOH is replaced by an alkyl group R'). Esters mainly result…

The work of art I have chosen for this week’s discussion is Sun Mad by Ester Hernandez. When reviewing the work of art I start with the actual picture of the women in the bonnet and looking at the symbolism behind her body. The motif that I see running through the picture is that of frustration with the words “mad, unnaturally, insecticides, miticides, herbicides, and fungicides”. The maid is a skeletal image of what appears to be that of a migrant worker carrying grapes as is often seen in the…

the plot. With that in mind, it can easily be argued that Aunt Ester was the true “gem” of this play. Without her, this story would quickly fall back into the depths of memory for many of the members of the audience. She is a wealth of information and wisdom undoubtedly, but she is much more than that. She is charitable and kind in a time where much of the general population was only concerned with their self-preservation. Aunt Ester in Gem of the Ocean represents the idea to the community that…

Ester Hath Hanged Hamen, written by Ester Sowernam responds to the accusations proposed by Swetnam, asking “How rare of a thing is it for women to offer themselves prostitute? How common a practice it for men to seek and solicit women to lewdness? What charge do they spare…

up normally. Then, she noticed the horrifying sight. Her father - her father was asleep in the corner. Ester wanted to scream. Why was he there? Where was Edward? Ester began to panic, which caused her the beeping to accelerate the bothersome noise. Within a short moment, a doctor in a white robe entered the room to verify that Ester was still okay. To his surprise, she was alive. “Darling Ester, you’re at the hospital, in South Berlin. We found you, and your friend…

Ethyl vinyl ether was used to protect –OH on glycidol based on a literature reported protocal.59 In a typical procedure, 0.675 mol glycidol and 200 mL ethyl vinyl ether were loaded in a round-bottom flask, to which 1.25 g TsOH was then added. The reaction was allowed to proceed at room temperature (RT) for 3h. The resulting mixture was then purified by washing with 100 ml saturated aqueous solution of NaHCO3 for 3 times. The organic layer obtained was dried by MgSO4. After filtration of MgSO4,…

CHAPTER 5 PROPERTIES OF MAHUA METHYL ESTER AND THEIR BLENDS WITH DIESEL 5.1 INTRODUCTION In this work, characteristic fuel properties of mixture of Mahua methyl ester and their blends with diesel in the proportions of 10:90, 25:75, 50:50, 75:25 and 100:0 respectively were studied. The characteristics fuel properties of Mahua methyl ester blends were found to be those of diesel oil. 5.2 MATERIAL AND METHODS The Mahua oil methyl ester was prepared by using three stage transesterification…

grew worse for Ester. Her father grew hungry for her body, pushing the lengths of her body, and turning into a full-blown sinner. Ester was horrified to even be near her father. Most nights she would hide in her bedroom until after he went to sleep, and avoided all eye contact. But, William's desire couldn't be matched. If he wanted Ester, he would have her, when he wanted it, no matter what time it was. She'd even awoke to his hands exploring her body when she was asleep, before. Ester wished…

Substitution: The Synthesis of Esters Razon, Valjean Paulo Mella Rico, Fatima Sarah Rogel Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101 Philippines…