In this experiment, method 1 generate a mixture of yellowish crystals and a yellowish gluey product. Using method 2, the product appear as white crystals. Given that the yellow color remain throughout the product in method 2, too much aldehyde was added. It was predicted that this was the source of error because aldehyde was a yellow liquid. In this experiment, 293 mg of aldehyde was weighted for method 1 instead of 250 mg and.
The Gelatin (GEL) test result had no diffusion of pigment so that showed it was negative. The Glucose (GLU) result was yellow so it was positive, and the Mannitol (MAN) result was blue-green so it was negative. The Inositol (INO), Sorbitol (SOR), Rhamnose (RHA), and Sucrose (SAC) test results were all blue-green so they were all negative, as well as the Amygdalin (AMY) test. The Melibiose (MEL), Arabinose ARA, nitrate reduction, and catalase tests were all positive, and the oxidase test was
The goal of the experiment is to synthesize a bromohexane compound from 1-hexene and HBr(aq) under reflux conditions and use the silver nitrate and sodium iodide tests to determine if the product is a primary or secondary hydrocarbon. The heterogeneous reaction mixture contains 1-hexene, 48% HBr(aq), and tetrabutylammonium bromide and was heated to under reflux conditions. Heating under reflux means that the reaction mixture is heated at its boiling point so that the reaction can proceed at a faster rate. The attached reflux condenser allows volatile substances to return to the reaction flask so that no material is lost. Since alkenes are immiscible with concentrated HBr, tetrabutylammonium bromide is used as a phase-transfer catalyst.
This was proved by utilizing the IR spectrum to verify the C=O was not in the final product as it lacked the 1640 cm-1 peak. The melting point of 113-115 degrees C proved that the final product obtained was the E-Stilbene. The TLC plate proved that the E and the Z product was produced, show cased by the double intensity of the DCM spot to the final product’s spot, both which had an Rf of 0.92. The double intensity proved that both products were produced, but through heating and filtering, the Z-Stilbene was
This supports the isolated product is majority made of the desired product and is largely pure. Mass spectrometry of the crude product shows the molecular ion peak is 162.1, which is the largest fragment in the mass spectrum (Figure 4) and corresponds to the molecular weight of methyl trans-cinnamate (Table 1). The base peak is 131, inferring the fragment lost is 31 m/z in size. This 31 m/z matches the OCH3 fragment of the ester, and would not result from a trans-cinnamic acid. This is evidence the product was successfully
Using a toothpick, you submerged the metals in the liquid and ensured they did not touch. After 1-2 minutes results were recorded in a observation table. The independent variable in this reaction is the amount of copper wire, magnesium ribbon, and zinc metal (powder form) and the 1/3 filled wells of copper (II) nitrate, magnesium nitrate, or zinc nitrate. The dependent variable in this reaction is the reaction that occured between the metals and the solution. Part B: Using the same experimental design as part A, three drops of sodium
The formula for sodium acetate is NaC2H3O2, it is quite soluble in water, soluble in ether and slightly soluble in ethyl alcohol. While the chemical compound melts at 622.8℉, it does not have a boiling point for it will decompose. A hydrate is a chemical compound that forms when one or more water molecules are added to the molecules of another substance. Since sodium acetate is a trihydrate (NaC2H3O2·3H2O), it has three molecules of water for every molecule of sodium acetate and because of this, anhydrous sodium acetate quickly transitions into a trihydrate. This is due to sodium acetate being quite hygroscopic, meaning it readily absorbs moisture from the air.
It is produced also by the reaction of ammonium nitrate and sodium hydroxide, sodium bicarbonate or sodium carbonate. NH4NO3 + NaOH → NaNO3 + NH4OH NH4NO3 + NaHCO3 → NaNO3 + NH4HCO3 2NH4NO3 + Na2CO3 → 2NaNO3 + (NH4)2CO3 Sodium Nitrate (Nitratine) is Isostructural with Calcium Carbonate (Calcite). This means they have similar chemical structures. In terms of their crystal nature, they are also said to be Isomorphous. Sodium Nitrate is called Nitratine when it is in a mineral state.
The reaction created quite a stir, fizzing slightly and turning the solution a dark greenish blue almost immediately, before settling into a clear teal solution after a minute of stirring with a glass rod. This reaction produced clear, teal blue, aqueous copper (II) nitrate, dissociated into the ions Cu2+ and NO3-, as well as clear, colorless water (H2O) in its liquid form, and nitrogen dioxide, a dark, orange-yellow gas that escaped as the solution was being
Nika and I believe that solid #6 is dried up purple food coloring because once you put the solid in water it dissolves and the water becomes purple(just like the color of our sludge). When we collected liquid from our distillation separation method, liquids #5 and #4 came out clear (without the food coloring). We believe solid #6 is what made our sludge purple. The density of food coloring is the same as water: 1 gram per square millimeter, our density was very close to this it was 0.51g/cm3 and we could have made mistakes when reading the graduated cylinder. Solid #5 is silica sand based on the fact that it isn’t soluble in water.