Week 24 Flashcard: Stoichiometry

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 the mole ratio in a chemical reaction?

Back

The mole ratio is the ratio of moles of one substance to the moles of another substance in a balanced chemical equation.

Front

How do you calculate percent yield?

Back

Percent yield = (Actual yield / Theoretical yield) x 100%.

Front

What is the significance of STP in gas calculations?

Back

STP stands for Standard Temperature and Pressure, which is 0 degrees Celsius and 1 atmosphere pressure, used as a reference point for gas calculations.

Front

What is the balanced equation for the reaction of magnesium with water?

Back

1Mg (s) + 2H2O (l) -> Mg(OH)2 (aq) + H2 (g).

Front

How many liters of gas are produced at STP from 1 mole of gas?

Back

At STP, 1 mole of an ideal gas occupies 22.4 liters.

Front

What is the role of coefficients in a balanced chemical equation?

Back

Coefficients indicate the number of moles of each substance involved in the reaction.

Front

What is the theoretical yield?

Back

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

Front

What is the actual yield?

Back

Actual yield is the amount of product that is actually obtained from a chemical reaction.

Front

How do you determine the limiting reactant in a reaction?

Back

The limiting reactant is the reactant that is completely consumed first, limiting the amount of product formed.