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A chemical reaction equation is a symbolic representation of a chemical reaction using chemical formulas and symbols.
A chemical reaction equation shows the reactants on the left and the products on the right, separated by an arrow. The reactants are the starting compounds, and the products are the final compounds. A chemical equation must be balanced to ensure the law of conservation of mass. This means that the number of atoms on both sides of the equation must be equal. A balanced chemical reaction equation shows the mole relationships of reactants and products. It often also includes the amount of energy involved in the reaction.
Stoichiometry is a branch of chemistry that involves using the relationships between reactants and products in a chemical reaction to determine quantitative data. It is concerned with the weights of reactants and products before, during, and after chemical reactions.
Stoichiometry can be categorized into four types of problems: Mass to mass conversion Mass to moles conversion Mole to mass steps conversion Mole to mole steps conversion
Stoichiometry can also be used to calculate the exact amount of reactant needed to react with another element. Stoichiometry also involves the concept of limiting reactants. A limiting reactant is a reactant that is completely used up in a reaction and determines when the reaction stops. It can be determined by comparing the number of moles of each reactant and the mole ratio between reactants and products.
Related Test: Chemical Engineering Practice Test: Solving Material Balance Problems and Solving Material Balance Problems for Single Units
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