6. Why does CO2 have a much lower boiling point than NO2? CO2 is a linear molecule, and is not polar, and therefore experiences only dispersion forces with other CO2 molecules. NO2 is bent and polar, and therefore interacts with other NO2 molecules via a relatively strong dipole-dipole force. This means that it will require more thermal energy to break free from these intermolecular forces, i.e.
They do not usually react with alkyl halides , with a few exception. As well , Grignard reagents are very strong bases with a pKa of greater than 300 . this means that they will readily react with alcohol , phenols or acidic agents. In reactions involving Grignard reagents , it is important to ensure that no water is present, which would otherwise cause the reagebt to rapidly decompose . if water is present in the
The final crude product yield was 0.91g and the pure product yield was 0.36g. Error may have occurred during the extraction phase. Although I extracted twice with Sodium Chloride, if waste was not completely removed, it would affect the purity of the product. The distillation process may have also affected the pure product. The lab manual recommended that 0.5mL of waste be removed during distillation; otherwise it would affect the purity of the product.
Name : Amy Vo Date: 11/11/2014 The purpose of this experiment is to determine the equivalence point of the solution. When the conductivity is placed in a solution of Ba(OH)2, the Ba(OH)2 will dissociate into Ba2+ and OH-. The availability of these ions will increase electrical conductivity. When adding H2SO4, the solution will neutralize the Ba(OH)2 producing BaSO4 which is not soluble in water. Therefore, the conductivity will go down.
The solution added reacted by turning the solution into a transparent liquid. This reaction is endothermic because the solution HC1 and Na2EDTA added decreased the reaction as the equilibriums both shifted to the left. When Na2SO4 was added the equilibrium should have shifted to the left. The solution reacted by creating more HSO4 even more when the 10 drops of the sodium sulfate solution was added as the color changed to a much lighter solution. When NaHSO4 was added the equilibrium should have shifted to the
Reactant B- Sodium Chromate(aq)~Na2CrO4 Sodium Chromate is an odorless yellow crystalline powder. It melts at 1457.6oF, has a molar mass of 162g/mol, and a density of 2.7g/cm3. It is soluble in water and slightly soluble in ethanol. Sodium Chromate shouldn’t be inhaled, ingested, or touched (absorbed through skin) as it is toxic and can be fatal. It is not combustible, but it speeds up the combustion of other substances because it is an oxidizing agent.
Experiment 11 is composed of cold liver and 2 mL H2O2. We anticipated that the reaction rate should be very low because a low temperature means a low reaction rate. At low temperatures, particles move slower and therefore there is a lower amount of collisions between the enzymes and the substrates. Based on observations, the reaction rate was fairly high which came as a surprise for us, this is not what we had anticipated. The reaction rate was given a 3.
A buret, a volume-measuring instrument used to add measured volumes substances, is the instrument that is typically used for titrations. Potassium hydrogen phthalate is a good primary standard as the acid used in titrations because it is a relatively weak acid, so it is fairly stable. Sodium hydroxide is not a good base to use in titrations because it is not very stable. Acid-base reactions are reactions between an acid and a base that react together to form water and another substance (Waugh 2010). These reactions neutralize the
However, there will be no reaction unless an acid catalyst (H+) is present. The reaction is characterized by Figure 1 below: Figure 1: Aspirin Synthesis The results for this particular experiment did indeed yield aspirin product through the technique of crystallization, however, it was not extremely pure. Crystallization is the technique by a particular substance is obtained in a crystal form due to changes and differences in solubility after a solution has been heated and mixed thoroughly. Aspirin is one form of a type of drugs known as Analgesics. These class of drugs are used to relieve pain only, they do not target inflammation like some other types of pain relievers do.
Chose and Obtain Sulfate Solution will form aqueous compound as sulfate when combined with anything is aqueous · Is an anion 3. Chose and Obtain Nitrate Is an anion · Need another anion to test and see if order of reactivity is correct for each anion Solution will always form an aqueous compound according to Alchem Table 4. Chose and Obtain Copper Used by different lab partners whose data was observed Carrying Out The Reactions & Collecting Data How Why 5.Place 10ml of water in a test tube Done so aqueous solution may be made 6. Take magnesium nitrate and place 3 drops into test tube with water Done to have one part of the reaction 7. Repeat step 5 and 6 but replace magnesium with zinc Done so 2 metals can be tested at the same time 8.