Acid-base chemistry

lab was to separate unknown compound 204, composed of an amine, a carboxylic acid, and a neutral component, into each of its three respective states. The unknown compound was separated using microscale separation of acidic, basic, and neutral components by liquid/liquid extraction. Liquid/liquid extraction is a very common method often used in work-ups and allows for isolation of neutral components using acid/base chemistry; this method is extremely helpful in separating reactants and products…

The tart, tangy taste of apple cider vinegar (ACV) has been treasured since at least 400 B.C when Hippocrates first discovered the natural anti-bacterial and anti-microbial properties that this inexpensive liquid contains. Not only can it kill germs, but it is good for your health! Many common household cleaners are full of toxic chemicals that can make people very sick and even lower their I.Q., but ACV is all-natural. Not all types of ACV are made the same though. Some are full of residual…

able to produce rust over a period of time, because of its lack of variables(water and oxygen). For the fourth jar, vinegar actually speeds up the rusting process because “it contains a dilute form of acetic acid.” (education.seattlepi.com) Acetic acid is when the hydrogen ions within the acid removes the electrons from the iron atoms and ionize it, thus creating the iron to be highly receptive to rust. If we were to alter the variables in our experiment, adding salt and bleach would accelerate…

experiment is to determine the type of chemicals that are inside the mislabeled bottles. Materials: • pH strips • 8 bottles of known chemicals: o silver nitrate o iron (III) nitrate o copper (II) nitrate o sodium iodine o sodium hydroxide o nitric acid o lead (II) nitrate o sodium carbonate • 8 bottles of unlabeled chemicals the same contents as known chemicals • 1 well tray Procedure 1. Place 7-10 drops of each chemical (known and unknown) into separate wells in the well tray. 2. Observe…

We ran MgCl2 through various tests to see if its properties match our UWC. the first test was to compare the solubility of UWC and MgCl2. We added 1mL of distilled water to two different beakers each and gradually added 1g of MgCl2 and 1g of our UWC to each beaker. Approximately after 15 minutes, both solids dissolved in the water and MgCl2 passed this test. The second experiment was the halide test to determine if there are any Cl- ions in both solutions. We added 1 mL of 6M HNO3 and 1mL of…

Procedure: To begin this experiment all of the equipment was collected. The materials used in this experiment were a small plastic weighing dish, oxalic acid, a 250 mL Erlenmeyer flask, distilled water, a buret, NaOH solution, a 150 mL beaker, funnel, and phenolphthalein indicator. Before the experiment began the buret was cleaned with distilled water, a buret brush, and dish soap. The buret was completely washed out in order to not cause any faults in the results of the experiment. Once the…

made in the first week of lab. An acid of unknown concentration was prepared by the instructor and given for analysis. 25.00 mL of the acid was transferred into an Erlenmeyer flask using a volumetric pipette and 2-3 drops of phenolphthalein were added. The resulting solution was titrated with NaOH to achieve the faint pink endpoint and [unknown] was calculated according to the volume of NaOH used. The purpose of this experiment was to determine the [unknown acid] by titrating it with a…

Experiment 1 Name: Sanzhar Kerimbek 20140930 General Chemistry Laboratory 1 Fall Semester 2014 Co-worker: Byungsoo Kim 20140831 Date: 27.09.2014 Title:Volumetric analysis Introduction The concept of volumetric analysis is a part of chemical analysis and is performed foremost with the volumetric chemical glassware (i.e. Erlenmeyer flasks, burets, pipets, test tubes etc.). The aim is to find out the concentration of one substance by reacting it in aqueous solution with the substance with…

Titration is used to determine the equivalence point of a reaction, or the point when the moles of acid are equal to the moles of base in a mixture. Titration is used to determine the concentration of an unknown solution by using an already known solution. This process is important because it is commonly in the medical field. For example, pharmacists use titration in the creation of drugs. In addition, doctors also titration when determining the concentration necessary to give their patients of…

1. There is not much known about phage influence on microbial communities in extreme thermal environments. What may be one of the roles these phages have in this environment? - Phages are an important components of surface hot springs, they are abundant and active components of hot springs capable of killing a significant proportion of the resident microbial populations. They play an important role as predators of hot spring microbial communities and influence carbon and nutrient cycling in…