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Research report on Stoichiometry

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Stoichiometry..!!!! Choithram International School To- Mr. Mahajan SirMr. Mahajan Sir MYP- 4 Chemistry 2/1/2012 Disha Kanoongo What is stoichiometry? How does it affect chemistry? What are its principles? Experiment related. ________________ INTRODUCTION Chemistry a very interesting and always to be found new subject. But to make it more interesting we have to learn how and why it is used. So as in this let?s start with why is it used? A very simple question well look around the world and see how the things in world are made. From what and how are they made? But when it comes to how chemistry is used, we are supposed to know how to calculate or react and doing some experiments .The term STOICHIOMETRY, is one of the way to find out the calculations. DEFINATION Stoichiometry is a branch of chemistry that deals with the relative quantities of reactants and products in chemical reactions. In a balanced chemical reaction, the relations among quantities of reactants and products typically form a ratio of whole numbers. ...read more.


This is the basis of mole ratios. Stoichiometry provides the quantitative relationship between reactants and products in a chemical reaction. For example, when methane unites with oxygen in complete combustion. What do you measure? It could be anything. When you're doing problems in stoichiometry, you might look at... - Mass of Reactants (chemicals before the reaction) - Mass of Products (chemicals after the reaction) - Chemical Equations - Molecular Weights of Reactants and Products - Formulas of Various Compounds MAIN CALCULATION Stoichiometry rests upon the very basic laws that help to understand it better, i.e., law of conservation of mass, the law of definite proportions (i.e., the law of constant composition) and the law of multiple proportions. In general, chemical reactions combine in definite ratios of chemicals. Since chemical reactions can neither create nor destroy matter, nor transmute one element into another, the amount of each element must be the same throughout the overall reaction. For example, the amount of element X on the reactant side must equal the amount of element X on the product side. ...read more.


Calculating Molar masses Before we can do these types of calculations, we first have to know the molar mass. Fortunately, this is not difficult, as the molar mass is exactly the same as the atomic weight of an element. A table of atomic weights can be used to find the molar mass of elements (this information is often included in the periodic table). WHAT MORE..??? However, there you don't typically measure the number of molecules before adding them into has it's characteristic proportions. The method of obtaining these from chemical formulas, equations, atomic weights and molecular weights, and determination of what and how much is used and produced in chemical processes, is the major concern of Stoichiometry.This is especially important in medicine, because we would want the amount of toxic side products formed from the biochemical processes acting on the consumed medicine in our body to be minimal. In a equation or a question the number of atoms you need will help you figure out how much of each substance you will need to make the reaction happen. And to learn about more on this is much more new..!!!! ...read more.

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