Green Chemistry : The Key Principle Of Prevention

Nivaldo J. Chemistry: A Molecular Approach. 3rd ed. Upper Saddle River, NJ: Pearson Education, 2013. Print.

Using elemental analysis to determine the percent mass composition of each element in a compound is the first step in creating an empirical formula. There are many different types of elemental analysis, but in this experiment gravitational analysis and Beer’s Law are used. Elemental analysis is first used to find the moles of each element, then converted to mass, and then the percent mass of the element in the product is found (2).

The purpose of this study was to conduct a Diels-Alder reaction with the reactants, anthracene-9-methanol and N-methylmaleimide, in conjunction with the principles and metrics of green chemistry: increasing atom economy, utilizing safer solvents, and preventing pollution.1 Upon completion of the calculation, the atom economy and percent yield were found to be 100% and 4.88% respectively. Subsequently, melting point range analysis yielded a melting range of 218-220℃. These findings could be useful for individuals looking to maximize the percent yield for other Diels-Alder reaction while utilizing benign green reagents and solvents.

Lab Title: Synthesis, Decomposition, Single Displacement and Double Replacement Chemical Reactions Purpose: The objective of lab four was to use the website Late Nite Labs to determine types of chemical reactions. Combining and/or heating various compounds, observing the reactions and balancing equations for the chemicals involved, reveals the chemical reactions. Materials: A computer, Internet, calculator and access to Late Nite Labs.

These features support Weeks’ claim that green chemists are working to develop a field of chemistry that can replace polluting technologies. Weeks described how green chemists identify chemical products or processes that are toxic and wasteful, change chemical processes so they are less energy-consuming, and swap out harmful ingredients for nontoxic alternatives. Weeks uses evidence, such as facts or examples, reasoning, and stylistic elements, such as word choice, to strengthen the logic and persuasiveness of her argument. For that reason, Jennifer Weeks was able to successfully, adequately, and understandably communicate her claim to

Humans have always exploited their natural environment for all their needs including food, clothing and shelter. As the cultural development of humans continued, they looked for a greater variety of materials to cater for their needs. The 20th century saw an explosion in both the use of traditional materials and in the research and development of a wider range of materials to satisfy technological requirements. Developments added to this was a reduction in availability of the traditional resources to supply the increasing world population. Chemists and chemical engineer continue to play a pivotal role in the search for new sources of traditional materials such as those from the

Procedure: In the first experiment (Synthesis Reaction) 5g of Mg was heated with a Bunson burner to perform a reaction. In the second experiment (Decomposition Reaction) 5g of Cu2Co3 was heated with a Bunson burner to perform a chemical reaction with visible physical properties. In experiment 3 (Single Displacement Reaction) 15 mL of 6 M hydrochloric acid (HCl) was put into a Erlenmeyer flask and was stopped with an airtight stopper to record the temperature and pressure when .25g of Zinc was added. In Experiment 4 (Double Displacement Reaction) two separate beakers were used. In the first one there was 15mL of NaOH and the second contained NiCl2. These were poured into each other to watch what reaction would take place.

In “Chemistry: Green and Clean, the author builds an argument that Chemists are finding ways to save energy, cut waste and boost safety. Author Jennifer Weeks uses Green chemists working to identify chemical products and processes that are wasteful, Green chemists working to swap out harmful ingredients for safer alternatives, Green chemists working to modify processes to use less energy and cut waste to strengthen the logic and persuasiveness of her argument.

This report discusses how varying the mole ratio of the reactants affects the amount of the product that is produced and the amount of the reactants that remain at the end of the chemical reaction. We know that you can’t simply add another atom of nitrogen and take an atom of hydrogen away from ammonia because it would change to another substance. We also know that in a chemical reaction atoms cannot be created or destroyed but can make a new substance. A guiding question was made so they can figure out how to solve/find out what is going on. The atomic theory is connected to this lab because that the atoms in the lab cannot be created of destroyed during a chemical reaction. Meaning that each side the of the equation must include the same number of each type of atom. The relationship between the amounts of any two compounds, in moles, that are involved in a chemical reaction. In this lab we are showing how different ratios of moles of sodium bicarbonate and acetic acid and how the different moles leave and percentage out of the product but still remains in the lab. How this lab works we will combine sodium bicarbonate and acetic acid and we are see the amount of CO2 leftover after the reaction happens. Knowing this.

Chemical professionals are expected to serve the public and do so safely in order to strive for true advancements in chemical science. Chemical professionals also have the responsibility to maintain integrity and honesty in respect for the chemical profession itself. Misuse and neglect of this responsibility diminishes the core foundation to which all of these guidelines lie upon. There is also the responsibility of a chemical scientist to their employer and fellow employees to work honestly and safely within the Chemical Professional Code of Conduct guidelines. The most profound responsibility of a chemist is to treat others with respect and encourage others’ scientific contributions and ideas, to learn and coexist with others as well as to avoid bias of any kind toward another. This seems to be the basis that all other responsibilities branch from for the improvement of a chemical scientist as an individual, along with their work and benefactions to the chemical

Timberlake, K. C. (01/2014). Chemistry: An Introduction to General, Organic, and Biological Chemistry, 12th Edition.

Green chemistry is a concept that allows chemist to do experiments that are more environmentally friendly. In the formation of bromotoluene the solvents were not regenerated, as seen in process mass intensity (PMI) calculated was 314.27 indicating high waste due to low theoretical yield. The reaction did not follow principle 2, which is the regeneration of solvent indicates maximization the materials. In this experiment the waste product produced was N- succinimide, which is not a super toxic product indicating clean up is not harsh to the environment stated in principle 4. A catalyst was used in this experiment, which follows principle 9 of green chemistry stating a catalyst removes the use of large quantities of reagents to generate the reaction.

3. Leong, O. H. (2009). Qualitative Analysis. In Know Your 'O' Level Chemistry (pp. 101-103). Singapore: Panpac Education Pte Ltd.

principles support source reduction and the resulting benefits to human and environmental health are thoroughly explained many with examples and evidence of research)

Throughout the course of the years, the world has been greatly affected by many detrimental factors. Many of these detrimental factors include fossil fuels and pollution are having a negative impact on our planet. Luckily, engineers have developed new and innovative technology that can potentially help lessen pollution and other detrimental factors. Green technology has the immense potential to generate a new method to help produce a less toxic environment ( What Is Green Technology ). Our world is slowly decaying as a result of our human actions everyday. Yet, what if specific technology could really help and change the world for the better? It is essential to develop new and efficient ways to help society fulfill their daily tasks and