Chem 112 Technical Abstract

The purpose of this semester long experiment was to determine an unknown organic acid. An organic acid is an organic compound with acidic properties. A base reacts with acids to form salts. Titrations are used to determine the concentration of unknown substances. The purpose of the KHP experiment was to determine the molarity of NaOH. HCl titrations are mainly to check technique and used to verify the molarity of NaOH solution. The hypothesis is that this acid is C4H3OCOOH.

In reference to the analysis of anions, Table 1 shows that a precipitate was formed when our unknown was combined with HNO3 and AgNO3, thus indicating the presence of a chloride ion. Because our unknown did not form a precipitate due to HCl and BaCl2, separate, effervesce, or smell, we concluded that neither sulfate, nitrate, carbonate nor

The experiment involves with the investigation of the unknown solutions used and the determination of their concentrations. The techniques and their expected outcomes are elaborated further in detail in the following report. For the most part, Arrhenius’s definition of an acid and base is employed in this experiment as it is sufficient for this case. Acid can be represented visually using this equation:

Plasma is often found in areas of the planet/universe where extremely high heats are possible and gases exist to help create the plasma.

Acetic acid was mixed with the precipitated and dissolved until it was not cloudy. Ammonium hydroxide was mixed with the unknown liquid. Potassium Chromate was then added and a yellow precipitate was formed. The mixture was centrifuged and an orange liquid was formed and then decanted. The remaining precipitate was then checked for the presence of barium by adding HCl to dissolve it and was then

Ultra Chem SFV cannabis strain can be grown indoor and outdoor. Flowering time is 8 weeks. It will grow buds that are compact and dense and the average yield it gives will be compensated by buds with strong THC content. The buds will emit a skunky and fuely scent and the taste will have hint of the same with sour undertones

The volume of carbon dioxide gas produced from a reaction was measured in order to determine what carbonate sample was used. A gas assembly apparatus was used to capture the gas from a reaction between an unknown carbonate and 6M hydrochloric acid; three trials were performed. The mass of the unknown carbonate was determined, and the reaction occurred in a test tube. The volume of gas produced by the reaction was measured, and the partial pressure of carbon dioxide was calculated after the partial pressure of water vapor was determined using Dalton’s Law of Partial Pressures. The percent mass of carbon dioxide gas was then calculated, and the average mass percent was compared to the table of known carbonates. It was concluded that the unknown carbonate sample used in the reaction was magnesium carbonate.

Safety Laboratory issues: 1. Tables not clean of clutter. 2. Furniture not neatly arranged. 3.

Elimination tests were done on each of the five cations, "K" ^"+" , "Z" "n" ^"2+" , 〖"Cu" 〗^"2+" , and 〖"Co" 〗^"2+" to distinguish them from one another. First, five centrifuge tubes were obtained and labeled, one for each cation solution. After the centrifuge tubes were labeled, ten drops of each cation solution were added to their appropriate tube. In the first elimination test, Metal Hydroxide Test, 6 M NaOH was added by drop to each centrifuge tube until a precipitate was formed in the solution. The cation solutions that formed a precipitate, an extra ten drops of 6 M NaOH was added to test for amphoteric species. In the second elimination test, Ammonium Hydroxide Test, five centrifuge tubes were labeled and ten drops of each cation solution were added to their specific tube. 15 M 〖"NH" 〗_"4" "OH" was added to each tube until a precipitate formed or the color of the cation solution changed. In the confirmation flame test of the five cations, again five tubes were labeled and

The purpose of this experiment was to use qualitative analysis—manipulating the chemical and physical properties of a certain species—to determine the identities of two cations in an unknown solution. In Part A, the goal was to determine whether the solution—composed of metal nitrate salts—contained lead (Pb2+) or silver (Ag+). Afterwards, in Part B, the goal was to determine whether the solution contained barium (Ba2+) or calcium (Ca2+). Finally, in Part C the goal was to identify cations in specific solutions though the cation flame test.

In attempting to identify ions in a precipitate the dissolved substances must be removed. Next the mixture of ions need to be mixed with a reagent that will assist in identifying the ions in which you are trying to identify. Commonly used compounds for analysis of cations and anions are 6M HCl, 6M HNO3, 6M NaOH, and finally 6M

When preparing for work I begin the night prior by setting an alarm to wake me up early to give me plenty of time to prepare properly, along with lying out the clothing and additional items I shall need for the day to come. After I have woken up I walk out to make breakfast for some fuel to aid in pushing me through the day, followed by a thorough tooth brushing to remove any reminents of food in my teeth along with any hints of bad breath. Soon following, I shall clothe myself in my work attire and make sure all additional items are ready for me to grab and leave the house in a reasonable timeframe to ensure less likelihood of arriving late.Next I shall drive down a predetermined route which shall allow me to arrive the quickest, while also driving safely to prevent any possible accidents on the way to my workplace. Finally, I shall pull into a parking space, the first one I find regardless of location if all others are full, and head inside to

Chem 213 is the stuff of nightmares for most second year students, I often wake up in a panic thinking about it. The course is known for being difficult (an understatement) because of the amount and complexity of the material. Upper years often describe it as a “GPA Killer”. Thankfully, my classmates and I do not have to suffer alone, we have our amazing TA, Walid, there to help us. He currently runs not 1, not 2 but 3 tutorials on his own. These tutorials are not mandatory nor required, so he doesn't even have to organize them! He does it on his own time to help us. He even organized a tutorial during reading week when he could’ve taken a break. We know how busy he is with his research, being a TA and acting as the Graduate Chemistry Society’s

An electron in a permitted orbit has a specific energy and is in an allowed energy state. An electron in an allowed energy state will not spiral into the nucleus.

The main objective of this experiment is to carry out qualitative analysis to identify metal cations in unknown solution 1.