#: 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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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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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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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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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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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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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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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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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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Unit 9: Stoichiometry Essential questions: How does the amount of each reactant present at the start of a chemical reaction determine how much product forms? The amount of preactants has to equal the amount of products How are balanced chemical equations used when solving stoichiometric problems? So the mole ration is correct for the equation What causes chemical reactions to stop? What is a limiting reagent ? it is the factor that limits the amount fo product formed from the equation What is…
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