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13 Cards in this Set
- Front
- Back
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the two types of stoichiometry are... |
composition stoichiometry (mass relationships of elements and compounds) reaction stoichiometry (mass relationships in reactants and products in a reaction) |
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what does the limiting reactant do? |
limits the amount of the other reactant that can combine and the amount of product that can form in a chemical reaction |
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the excess is...? |
the substance that is not completely used up in a chemical reaction |
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percent yield is found by...? |
dividing the actual yield of a reaction by the theoretical yield. |
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You are asked to use stoichiometry to solve a problem in which you are given the molar amount of one substance and asked to determine the molar amount of an unknown. What conversion factor should you use? |
molar quantity of the unknown ---------------------------------------------- molar quantity of the given substance (mole to mole ration) |
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the number of conversion factors needed to solve a mass to mass stoichiometry problem is...? |
g/ mol/ mol/ g ---------------------- = g g/ mol/ mol 3. |
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the measured amount of product obtained from a chemical reaction is the |
percentage yield |
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a mole ratio is...? |
a conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction |
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In an ideal stoichiometric calculation, the mass or the amount of any reactant or product can be calculated if... |
the balanced chemical equation and the mass or amount of any other reactant or product is known. |
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what is necessary to solve any stoichiometric problem? |
a balanced chemical equation. |
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theoretical yield is...? |
the maximum amount of product that can be produced from a given amount of reactant |
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actual yield is...? |
the measured amount of a product obtained from a reaction |
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percentage yield is...? |
the ratio of the actual yield to the theoretical yield, multiplied by 100 |
