Chemistry - Limiting Reactants

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4 Terms

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Limiting reactant

The reactant in a chemical reaction that is consumed first, limiting the amount of product formed.

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How to find the limiting reactant

  1. Taken the given value and multiple by mol/mass

  2. Mulitple by the mole ratio of given:product

  • Do this for all given values, the lowest of them is the limiting reactant

  • If the given value is already in moles just multiple by the mole ratio

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How to find the amount of product formed

  1. Find the limiting reactant

  2. Multiply by the molar mass of product

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How to find the amount of excess

  1. Use the amount of product used from the excess factor

  2. Put it into this formula: Initial value - amount used