Nickel(II) sulfate, used for nickel plating, is prepared by...

Nickel(II) sulfate, used for nickel plating, is prepared by treatment of nickel(II) carbonate with sulfuric acid: $$ \mathrm{NiCO}_{3}+\mathrm{H}_{2} \mathrm{SO}_{4} \longrightarrow \mathrm{NiSO}_{4}+\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} $$ (a) How many grams of $\mathrm{H}_{2} \mathrm{SO}_{4}$ are needed to react with $14.5 \mathrm{~g}$ of $\mathrm{NiCO}_{3} ?$ (b) How many grams of $\mathrm{NiSO}_{4}$ are obtained if the yield is $78.9 \% ?$

Nickel(II) sulfate, used for nickel plating, is prepared by treatment of nickel(II) carbonate with sulfuric acid:
$$
\mathrm{NiCO}_{3}+\mathrm{H}_{2} \mathrm{SO}_{4} \longrightarrow \mathrm{NiSO}_{4}+\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O}
$$
(a) How many grams of $\mathrm{H}_{2} \mathrm{SO}_{4}$ are needed to react with $14.5 \mathrm{~g}$ of $\mathrm{NiCO}_{3} ?$
(b) How many grams of $\mathrm{NiSO}_{4}$ are obtained if the yield is $78.9 \% ?$

Key Concepts

Balanced Chemical Equation

A balanced chemical equation represents the conservation of mass, ensuring that the number of atoms for each element is the same on both the reactant and product sides. This is fundamental for determining the mole ratios used in stoichiometric calculations, making it a key concept in chemical reaction analysis.

Mole Concept

The mole is a fundamental unit in chemistry that allows scientists to count particles, such as atoms, molecules, or ions, by relating them to a fixed number (Avogadro’s number). This concept is essential for converting between the mass of a substance and the number of particles, facilitating quantitative chemical analysis.

Stoichiometry

Stoichiometry involves using the mole ratios derived from a balanced chemical equation to calculate the amounts of reactants and products in a chemical reaction. It is a critical tool for determining how much of a reactant is needed or how much product can be formed under given conditions.

Molar Mass

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole. It is used to convert measurements between grams and moles, enabling the practical application of the mole concept in stoichiometric computations.

Percent Yield

Percent yield quantifies the efficiency of a chemical reaction by comparing the actual yield of a product to its theoretical yield, which is calculated from stoichiometric ratios. It is expressed as a percentage and is vital for evaluating reaction performance in laboratory and industrial settings.

Transcript

Please give Ace some feedback