Stoichiometry

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Stoichiometry is the relationships between products involved in a chemical reaction which determines calculated quantitative data. The calculation of the relationships in molecules in a balanced chemical reaction.
Balanced equations for both practical experiments;
Balanced equation from practical 1, preparation of a standard solution of sodium hydroxide and titration; NaOH + HCl → NaCl + H2O Ratio 1:1
Balanced equation from practical 2, preparation of a standard solution of sodium carbonate and titration; Na2CO3 + 2HCl → 2NaCl + H2O + CO2 Ratio 1:2
Determining the stoichiometry; The stoichiometry in task 2 show that the same elements in the chemical reaction are show in its, reactants and products. Matter was not created or destroyed during the chemical reaction. …show more content…
The quickest and easiest way to identify the mole ratio is to balance an equations of chemicals.
Stoichiometry ratio is a ‘positive’+ total ratio which relates to the number of moles of the reactants which are being used in a chemical reaction. A ratio can be produced from understanding the coefficients in a balanced equation.
In task 2 part 2, from the coefficients been balanced it shows that there is a 1:2 mole ratio, this ratio is between reactants Na2CO3 and NaCl. From this ratio it means for 1 mole of sodium carbonate which reacts there will be an outcome of 2 moles of sodium chloride. Yields can be obtained theoretically by undergoing stoichiometry calculations.
Types of bonding present;
Electronegativity bonds - When electro negatives are equal the bond is non-polar covalent, when there is a difference in electro negatives within two atoms which is greater than 0 but not above 2.0 then the bond is polar covalent. When the difference in electronegative is greater than two between atoms the bond is

Stoichiometry Essay

a compound or element that has bonded with water. There is a ratio between the water molecules and the elemental molecules. These definitions are very interesting, but not very useful unless stoichiometry is studied. Stoichiometry is the relationship between substances in an equation or reaction. Stoichiometry primarily uses moles to calculate masses, volumes, and amounts of substances. By finding the relationship between two substances, the amount of each specific substance can then be calculated…

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Stoichiometry Lab Report Essay

Stoichiometry Lab Report Brittney Aceron Karla WadeChoza, Jonathan Guerrero, Luis Martinez Caroline Chen March 11, 2013 Introduction In this lab, we mixed together the reactants, 0.05 moles of baking soda and some vinegar into a flask. The products were the carbon dioxide, water, and sodium acetate. After mixing these chemicals together, we boiled the flask until all the liquid in the solution was gone. The purpose of doing this experiment was to practice using stoichiometry in a real lab…

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Unknown Acid Stoichiometry

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…

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Stoichiometry Lab Report

Cassity 1 Emma Cassity Mr. Cabrera Chemistry Period 5 15 February, 2015 Stoichiometry Lab Conclusion Trial Experimental Mass of CaCO3 Percent Yield % 1 0.635 g 93.9 % 2 0.443 g 98.2 % 3 0.575 g 121.8 % Level II 1a. If I did not wash all of the calcium carbonate out of the beaker and into the filter, my percent yield would be smaller because there would be less quantities in the filter. 1b. If I used tap water instead of DI water, the results would be very different since tap water holds many different…

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Stoichiometry and Chemical Reaction Essay

gy------------------------------------------------- Etymology [edit] The term stoichiometry is derived from the Greek words στοιχεῖον stoicheion "element" and μέτρον metron "measure". In patristic Greek, the word Stoichiometria was used by Nicephorus to refer to the number of line counts of the canonical New Testament and some of the Apocrypha. ------------------------------------------------- Definition [edit] Stoichiometry rests upon the very basic laws that help to understand it better, i.e., law…

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Stoichiometry Lab Report

David Francisco Ms. Hansen H Chemistry 3 10 January 2015 Stoichiometry Lab Report What is the actual yield compared to the theoretical yield of copper from the single replacement reaction of Fe + CuSO4Cu+FeSO4? Purpose: Determine theoretical yield of copper within the experiment using provided materials and analyze difference between the actual and the theorized yield. IV: Amount of Iron (Fe) DV: Mass of Copper (Cu) Control: SO4 (Sulfate) Materials: -Distilled Water -Coffee Filter -Hot Plate…

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Stoichiometry Lab Report

Introduction: Stoichiometry is the relationship between reactants and products in a chemical reaction. It is the relationship between the number of moles of various products and reactants in a chemical reaction (Stoichiometry). In chemistry it is very important to understand this relationship.This reaction was explored in order to gain a deeper understanding of limiting reagents in chemical reactions. When one reactant is in excess, the other reactant is referred to as the limiting reagent. This…

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Essay Stoichiometry and Copper

Stoichiometry! Title: The Reaction between Iron Power & Copper (II) Sulfate which Produces Iron (II) Sulfate & Copper Metal when Placed on a Hot Plate Mixed with Distilled Water. – Lab #4 Purpose/Problem: To determine the percent yield of copper using the theoretical yield and the actual yield from the experiment. Hypothesis: If this experiment is conducted correctly then it will be easy to be able to produce the correct actual yield and be able to figure out the percent yield. Materials:…

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Essay on Stoichiometry Of A Reaction 2

quantitative analysis technique that potentially could be used for the determination of the amount of copper in a sample. Using a two-step reaction sequence, copper(II) oxide will be synthesized from a weighed amount of copper(II) sulfate pentahydrate. Stoichiometry allows us to use the balanced equation to calculate the amounts of product and/or reactant involved in a reaction. Because the starting material will be a pure compound, it will be possible - to check the validity of the technique by comparing…

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Essay on Stoichiometry: Stoichiometry and Mol Caco 3== 0 , 2726 G Caco 3

Laura Zeppetelli-Bédard ID: 1438543 Steffie Ares SOLUTION STOICHIOMETRY (EXP. #1) Maria Ann Di Stefano October 2nd 2014 INTRODUCTION: In this experiment, there will be evaluation of the solution stoichiometry of the reaction between calcium chloride ( CaCl2) and sodium carbonate (Na2CO3) carried out in a aqueous solution. Here, aliquots of sodium carbonate and calcium chloride solutions are mixed to gives us the following reaction equation: Na2CO3 (aq) + CaCl2 (aq)…

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