• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Research report on Stoichiometry

Extracts from this document...

Introduction

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.

Middle

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.

Conclusion

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.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Chemistry essays

  1. A comparison of various proprieary antacids

    The antacids all tended to have different chemical compositions. In addition to the individual flavourings, each tablet/ gel must be composed of other different compounds. The solubility of these compounds may be different as well as the time taken for the antacid compounds to become active. So just carrying out a quick 5 minute titration may not really represent

  2. IB chemistry revision notes

    Gas Br2 Liquid I2 Solid o Directly proportional to the number of electrons in the species o The Halogens: as we go down Group VII the atoms have more electrons. So, they can have a greater charge imbalance and induce greater dipoles.

  1. hess's law

    - (52.3 � 10.5 KJ mol-1) = ((- 78.4) - (52.3)) � (10.2 + 10.5) KJ mol-1 = (- 130.7 � 20.7 KJ mol-1) � (- 131 � 21 KJ mol-1) = (- 131 � 16%) KJ / mole or KJ mol-1 * ?H = (- 131 � 21 KJ mol-1)

  2. IB questions and answers on Atomic Theory

    What is the highest energy wave? gamma Lowest? radio 27. Consider this diagram of an atom with arrows representing electron movement. a) Which two arrows correspond to energy absorption by the atom? B and D b) Which two arrows correspond to energy emission by the atom? A nd C c)

  1. Chemistry Internal Assesment - Stoichiometry (measuring 'x' in salt)

    FIRST ATTEMPT RESULTS I found the mass of crucible: 10,1+0,1g I measured the amount of salt: 2,0+0,1g - the salt was white, crystalline The whole mass: 12,1+0,1g I decided to measure the time and write the results in 6-minutes breaks.

  2. Investigating Stoichiometry - The table shows the mass of reactants potassium iodide and lead(II) ...

    Pb(NO3)2 x = 0.0038646176mol PbI2 Using KI: Moles of KI = 1.701g KI x = 0.010246988mol KI Moles of PbI2 = 0.010246988mol KI x = 0.005123494 mol PbI2 ?Pb(NO3)2 is the limiting reagent.

  1. Can one determine the coefficients of a balanced chemical equation by having the mass ...

    Record this data in "Data Table 2 - Quantitative Data Table" under "Mass of Aluminum(�0.01g)". 5. The properties of the strip of aluminum is also determined so that it can be ensured that the aluminum is not oxidized and that the properties of the aluminum fits the properties of what aluminum is actually supposed to look like.

  2. The chemistry of atmospheric and water pollution.

    Point 4.11 ? Analyse the information available that indicates changes in atmospheric ozone concentrations describe the changes observed and explain how this information was obtained. The concentrations of ozone in the atmosphere have been recorded since 1957. In the 1970?s, it was found that CFCs were depleting the ozone layer in the stratosphere.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work