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An Element-Reaction-Product table is used to find coefficients while balancing an equation representing a chemical reaction. Coefficients represent Moles of a substance so that the amount of atoms produced is equal to the amount of atoms being reacted with. This is the common setup:
The layout should eventually look like this, for a balanced reaction of baking soda and vinegar (HC2H3O2 + NaHCO3 = NaC2H3O2 + H2CO3)
From this, since the number of reactants for each element equals the number of products for each element, we can tell that each side is balanced in the equation.
When a reaction equation is not balanced, it needs coefficients to show equality. Here is an example with the separation of natural gas from hydrochloric acid using magnesium.
From this table we see that the number of Hydrogen and Chlorine Atoms on the product's side are twice the amount of atoms on the reactant's side. Therefore, we add the coefficient "2" in front of the HCl on the products side, to get our equation to look like this:
Because of the coefficients, the equation is balanced.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Element-Reactant-Product_Tables". A list of authors is available in Wikipedia.|