Stoichiometry Review

Front

What is Stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

What is a Mole Ratio?

Back

A mole ratio is a ratio that relates the amounts in moles of any two compounds involved in a chemical reaction.

Front

Define Theoretical Yield.

Back

Theoretical yield is the maximum amount of product that can be produced from a given amount of reactant, calculated based on stoichiometric principles.

Front

What is Actual Yield?

Back

Actual yield is the amount of product that is actually obtained from a chemical reaction, which may be less than the theoretical yield due to various factors.

Front

What is Percentage Yield?

Back

Percentage yield is a measure of the efficiency of a reaction, calculated as (actual yield / theoretical yield) x 100%.

Front

What is an Excess Reagent?

Back

An excess reagent is a reactant that remains after a chemical reaction has gone to completion; it is not completely consumed.

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What is a Limiting Reagent?

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

Front

How do you calculate the moles of a substance?

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Moles can be calculated using the formula: Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the balanced equation for the reaction of sodium and water?

Back

2Na + 2H2O → 2NaOH + H2.

Front

How do you determine the mass of a product formed in a reaction?

Back

To determine the mass of a product, use stoichiometry: convert moles of reactant to moles of product using the mole ratio, then convert moles of product to grams.