Recrystallization of aspirin lab report. Recrystallization of Benzoic Acid and Purification of Aspirin Lab Report (1) (2018 05 31 03 01 51 2022-11-01
Recrystallization of aspirin lab report Rating:
Lifespan development refers to the changes that occur in individuals over the course of their lives, from conception to death. These changes can be physical, cognitive, and socioemotional, and they occur at different rates and in different ways for different people. Understanding lifespan development can help us better understand ourselves and others, and it can also provide insight into the various challenges and opportunities that people face at different stages of life.
One of the key ideas in lifespan development is that individuals go through a series of stages as they grow and mature. These stages are marked by certain milestones or tasks that are considered typical or necessary for development at that age. For example, in infancy and toddlerhood, children are learning to walk and talk, and they are developing their social and emotional skills. In middle and late childhood, children are learning to read, write, and perform basic math operations, and they are also developing a sense of self and a sense of independence. In adolescence, individuals are going through physical and emotional changes as they transition into adulthood, and they are also developing their identities and forming relationships with others. In young adulthood, individuals are establishing themselves in careers and forming adult relationships, and in middle and late adulthood, individuals are dealing with issues of aging and declining physical and cognitive abilities.
There are many theories of lifespan development, each of which focuses on different aspects of human development. Some of the most well-known theories include Freud's psychoanalytic theory, which emphasizes the role of unconscious desires and conflicts in development; Erik Erikson's theory of psychosocial development, which focuses on the role of social and cultural influences in shaping identity and behavior; and Jean Piaget's theory of cognitive development, which emphasizes the role of intellectual development in shaping thought and behavior.
In addition to these theories, researchers have also identified a number of factors that can impact lifespan development. Some of these factors are biological, such as genetics and the environment in which an individual is raised. Other factors are social and cultural, such as the influence of family, peers, and society on an individual's development. Still other factors are personal, such as an individual's experiences and choices.
Understanding lifespan development can be helpful in many different ways. For example, it can help parents understand and support their children's development, and it can help educators design appropriate curricula and teaching methods for different age groups. It can also help individuals better understand and manage their own development, and it can help professionals in fields such as psychology, education, and social work better understand and serve their clients.
In conclusion, lifespan development is a complex and multifaceted process that involves many different factors and influences. Understanding lifespan development can help us better understand ourselves and others, and it can provide valuable insights into the challenges and opportunities that people face at different stages of life.
Recrystallization Lab Report
Our academic experts are ready and waiting to assist with any writing project you may have. It is the addition of water when carrying out suction filtration. Recrystallization of Benzoic Acid and Purification of Aspirin Name : Course : Organic Chemistry Laboratory and Recitation II Instructor : Benzoic Acid Aspirin The goal of these experiments was to apply recrystallization as on benzoic acid using different solvents such as distilled water and methanol; Then, to obtain the purification of aspirin using distilled water. Since the values are quite near, this shows that the aspirin we obtained is quite pure and hence contained less impurities. Also, acetylsalicylic acid is much more soluble in water than salicylic acid, though both exist as white crystals. I then stirred to mix the contents. The theory melting point is 140 ÌŠC and the experiment melting point range is 134.
Lab Report on the Synthesis and Recrystallization of Aspirin
The melting point for part B is also 153. Acetaminophen is also effective against pain. The goal was to remove the maximum of impurities while pouring the hot solution throughout the funnel into the beaker. To avoid this, the funnel may be kept warm using steam, and immediately drying with a towel or flame. Therefore, I had learnt that all wind source must be switched off and be kept away from when carrying out this process to ensure accuracy in results. As we have to wash down the crystals before we carry out the suction filtration, some crystals might have dissolved.
The percent yield of the aspirin obtained from my experiment is 46. The melting temperature range of aspirin according to my experiment is between 134. It is reversible reaction and they product sweet smelling products. Recrystallization Lab Report Introduction: a. Secondly, once we have dissolved and during the second round suction filtration in attempt to obtain the pure aspirin, we forgot to use 2 filter papers but instead use only one on the Buchner funnel.
It is first washed with 10 ml of water and when the layers separate, the bottom layer is disposed of. Share this: Facebook Facebook logo Twitter Twitter logo Reddit Reddit logo LinkedIn LinkedIn logo WhatsApp WhatsApp logo Synopsis The objective of this experiment is to enable us to conduct the synthesis of aspirin, reinforce the skills of recrystallisation and reinforce the technique of melting point determination. These mainly happen with higher doses of aspirin. At the end, The Melting point of each respective compound were obtained and the percentage of recovery were calculated accordingly. Reference : Williamson, K. There were two different trials ran in this experiment.
Recrystallization of Benzoic Acid and Purification of Aspirin Lab Report (1) (2018 05 31 03 01 51
The purpose is to explore the techniques to separate multicomponent mixtures as a function of pH of a solution. Liquid-liquid extraction also known as solvent extraction and partitioning, is a method to separate compounds based on their relative solubility into different and miscible liquids, usually water and an organic solvent. Both the Aspirin and Acetaminophen, a suitable alternative to Aspirin, are used to reduce substances in the body that cause pain, fever and inflammation acetaminophen, aspirin, and caffeine, 2011. It is an extraction of a substance from one liquid into another liquid phase. The dry crystals are then weight for percent yield and the melting point range is taken to test the purity. The aspirin crystals are packed into the small capillary tubes and make sure they are all compressed without air gaps.
The mixture remaining in the separatory funnel is then washed with 5 ml portions of 5% sodium bicarbonate until the pH of the aqueous layer is basic. I then heated the flask in the boiling bath for exactly 10 minutes. I Then added 40ml of distilled water in the solution and stirred until crystals began to form. Aspirin acts locally at the site of the pain to stop it from producing pain signals. Firstly, after the obtaining the crude product from the first suction filtration, we had to transfer it to the conical flask to carry out recrystallisation. The impure adipic acid is dissolved in a solvent.
It is carried out to form ester from an acid and an alcohol. Recrystallization is a technique used to purify chemicals by dissolving the impurities and a compound in the solvent. It is also useful in organic chemistry for the test of alcohols and carboxylic acid. Concentrated sulfuric acid is a strong acid and is highly corrosive. Acetic anhydride is uses as it is cheap and forms a by-product, acetic acid which is not corrosive and can be recovered to make more acetic anhydride unlike other acetylating agents that also can be used. The Pure sample was 0 and the crude sample was 50mg or 0.
Aspirin is an ester that has high molecular weight and it not soluble in water hence the solid can be separated by crystallization process. Conclusion From this experiment, I have learnt how to carry out suction filtration in the right way and to be cautious at all time when handling chemicals and so on. Then I added 5 drops of concentrated Sulfuric acid to the Acetic Anhydride and Salicylic acid in the Erlenmeyer flask using a dropper. After the filtration, the final pure product weighted 0. Find Out How UKEssays. Finally, the percentage of recovery was 80%.