Una primera etapa de la recuperación de magnesio del agua de...

Una primera etapa de la recuperación de magnesio del agua de mar es la precipitación de $\mathrm{Mg}(\mathrm{OH})_2$ con $\mathrm{CaO}$ : $$ \mathrm{Mg}^{2+}(a c)+\mathrm{CaO}(s)+\mathrm{H}_2 \mathrm{O}(l) \longrightarrow \mathrm{Mg}(\mathrm{OH})_2(\mathrm{~s})+\mathrm{Ca}^{2+}(a c) $$ ¿Qué masa de $\mathrm{CaO}$ se necesita para precipitar $5.0 \times 10^6 \mathrm{~g}$ de $\mathrm{Mg}(\mathrm{OH})_2$ ?

Una primera etapa de la recuperación de magnesio del agua de mar es la precipitación de $\mathrm{Mg}(\mathrm{OH})_2$ con $\mathrm{CaO}$ :
$$
\mathrm{Mg}^{2+}(a c)+\mathrm{CaO}(s)+\mathrm{H}_2 \mathrm{O}(l) \longrightarrow \mathrm{Mg}(\mathrm{OH})_2(\mathrm{~s})+\mathrm{Ca}^{2+}(a c)
$$
¿Qué masa de $\mathrm{CaO}$ se necesita para precipitar $5.0 \times 10^6 \mathrm{~g}$ de $\mathrm{Mg}(\mathrm{OH})_2$ ?

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Key Concepts

Stoichiometry

Stoichiometry involves using the quantitative relationships between reactants and products as expressed in a balanced chemical equation. It allows one to calculate the amount of one substance required or produced based on the known amount of another substance, by using mole ratios derived from the coefficients in the equation.

Balanced Chemical Equations

A balanced chemical equation shows the conservation of mass and atoms during a chemical reaction by ensuring that the number of atoms of each element is the same on both sides. This balancing is essential for accurately determining the stoichiometric coefficients used in subsequent calculations.

Molar Mass Calculations

Molar mass calculations are used to convert between the mass of a substance and the number of moles, which is necessary for applying stoichiometric relationships. Knowing the molar masses of the substances involved allows one to interconvert grams and moles, facilitating precise quantitative analysis in chemical reactions.

Precipitation Reactions

Precipitation reactions are a type of chemical reaction in which an insoluble solid, called the precipitate, forms when two aqueous solutions are mixed or when a reagent is added. Understanding these reactions is crucial for processes involving separation or recovery of specific components from a mixture.

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