Unknown Acid Stoichiometry

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The experiment purpose was to determine the identity of an unknown acid. This was accomplished by preparing diluted sodium hydroxide and titrating the unknown acid to determine its molar mass. Stoichiometry was used to convert the titration amount of 16.35-16.8ml to liters and multiply this by the molarity of the respective sodium hydroxide solution and a HA:NaOH ratio. This process was repeated 3 times to calculate a value for the number of protons donated, either mono, di, or tri. With this ratio, the closest molar mass calculated to an exact value for a possible acid was used. There were no deviations from the experimental procedures. There was a human error involved with receiving a neon pink color using the phenolphthalein indicator instead

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Chemistry Lab 7 Essay

#: 10 Experiment 7 Investigating Stoichiometry with Sodium Salt of Carbonic Acid Introduction The Problem that was introduced in this lab is that we as a group were using stoichiometry to react different reactants of either sodium bicarbonate or sodium carbonate and hydrochloric acid to produce sodium chloride and carbon dioxide. The problem is that we don’t know what we are reacting at each time: sodium bicarbonate or sodium carbonate with hydrochloric acid at each time, and we will use the chemical…

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Chemical Stoichiometry With Na2co3 And Hydrochloric Acid

INVESTIGATING STOICHIOMETRY WITH SODIUM SALTS OF CARBONIC ACID Intro The purpose of this experiment was to investigate chemical stoichiometry. The experiment conducted of combining sodium bicarbonate (NaHCO3) and sodium carbonate (Na2CO3) with hydrochloric acid (HCl) to produce sodium chloride, water and carbon dioxide. Balanced chemical reaction of HCl with sodium bicarbonate. NaHCO3 + HCl = NaCl + H2O + CO2 Theoretical Chemical reactions of NaHCO3 and Na2CO3 with HCl. When hydrochloric acid reacts with…

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Ah Ha Thesis Water Quality Essay example

How does one know if a liquid is safe to drink? In some places around the world that I’ve been to, I notice children drinking water that is foggy looking. If you see water that’s foggy, I don’t think you’d drink it either. In the labs we did, we tested to see which substances was the unknown, and we also tested for pH levels. These labs can help test whether the liquid is safe to drink. In the Revisiting Zinc/Iodine Lab, we took 2 grams of zinc and 2 grams of iodine and mixed them together in 10 mL of water in a flask. We weighed the contents of the…

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Magnesium Oxide Lab Report Results

powdery white [1]. To have more evidence to verify if the product was Magnesium Oxide, the solubility could have been tested. Magnesium Oxide is only partially soluble in water, but it is completely soluble in acids and ammonium salt solutions [1]. If the Magnesium Oxide would dissolved in an acid…

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Chem 103 Project Lab Essay examples

point, 0.5 M acetic acid was added to the 10mL volumetric flask containing 0.136 g of CuCl2 x 2H2O until it hit the 10mL mark on the flask. The next task was to obtain a set of solutions ranging from 0.010 M to 0.080 M by diluting the stock solution using a 5mL volumetric pipet, 10 mL volumetric flask, and acetic acid. Starting with the stock solution, 5 mL of the solution was drawn out by way of the volumetric pipet and placed in the 10 mL volumetric flask. Then acetic acid was added to the solution…

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The process of Titration Essay

solution and run the excess out. The solution level should now be on the zero mark (The bottom of the meniscus should be touching the 0 ml mark). This solution is known as the titrant. III. Use a pipette to measure a given volume of the solution of unknown concentration into the flask and place it under a burette. IV. Add three drops of suitable indicator to the flask. V. A white surface under the flask will make the end point easier to determine. Slowly run the titrant into the flask swirling continuously…

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F321 Key Notes

solute, in mol, dissolves per 1 dm3 (1000cm3) of solution. A Standard solution- is a solution of known concentration. Standard solutions are normally used in titrations to determine unknown information about another substance. A species -is any type of particle that takes part in a chemical reaction. Stoichiometry -is the molar relationship between the relative quantities of substances taking part in a…

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Chapter 4 Class Essay

Solutions Summary of the Chapter • General properties of aqueous solutions • Precipitation reactions: soluble reactants could yield an insoluble product • Acid, bases and neutralization reactions: reactions in which H+ are transferred from one reactant to another • Concentrations in solutions: Molarity • Solution stoichiometry and chemical analysis: calculation of amounts and concentrations General Properties of Solutions • Solutions are defined as homogeneous mixture of two or more…

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Determination of Redusing Sugar Using Dns Method Essay

The production of reducing sugars by acid of carbohydrate cereals powder, jams (total sugar content) and jams (reducing sugar content) were performed in order to study reducing sugar production. The study involved hydrolysis carbohydrate cereals powder and jams by immersing in boiling water at environmental temperature. Acid hydrolysis was carried out through reflux boiling for 20 minutes with 10ml 0f 1.5M concentrations of diluted sulphuric acid. Reducing sugars concentrations were determined…

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Student: Aldehyde and Aldol Reaction Essay

polyacetate natural products.1 In addition to classic aldol addition, traditional acid- or base-catalyze reactions resulted in some reverse and side reactions, and thereby the yields of the desired product were decreased. For example, the typical methods for the preparation of alpha,alpha’-bis(substituted benzylidene)cycloalkanones generally involve the cross aldol condensation of cycloalkanone with aldehydes under strong acids or bases. Dr. Zirani studied the reaction in the presence of SiO2-Pr-SO3H under…

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