Calculate the molarity of the ions present in these salt...

Calculate the molarity of the ions present in these salt solutions. Assume each salt to be $100 \%$ dissociated:
(a) 0.015 M NaCl
(b) $4.25 \mathrm{M} \mathrm{NaKSO}_4$
(c) $0.20 \mathrm{M} \mathrm{CaCl}_2$
(d) 22.0 g KI in 500 . mL of solution

Key Concepts

Dissociation

Dissociation is the process by which an ionic compound separates into its constituent ions when dissolved in a solvent. In the context of 100% dissociation, it is assumed that every formula unit of the salt fully separates, meaning the stoichiometric ratios of the ions directly reflect the formula of the salt.

Molarity

Molarity is a measure of concentration expressed as the number of moles of solute per liter of solution. It is a fundamental concept in solution chemistry and is used to relate the amount of a substance in solution to the volume of that solution.

Stoichiometry

Stoichiometry involves the quantitative relationships between reactants and products in chemical reactions. For dissociating salts, it is used to determine the number of moles of each ion produced based on the salt's formula and initial molarity.

Mass-to-Mole Conversions

Converting a given mass of a substance to moles using its molar mass is essential when the solute’s amount is provided in grams rather than in moles. This conversion is a key step in calculating molarity when the solute's quantity is given by mass.

Volume Conversions

Volume conversion is the process of converting volumes into the appropriate units required for calculations, such as converting milliliters to liters. This is crucial because molarity is defined in terms of moles per liter of solution.

Transcript

Please give Ace some feedback