How many grams of solute would you use to prepare the...

How many grams of solute would you use to prepare the following solutions?
(a) 500.0 $\mathrm{mL}$ of 1.25 $\mathrm{M} \mathrm{NaOH} \quad$ (b) 1.50 $\mathrm{L}$ of 0.250 $\mathrm{M}$ glucose $\left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\right)$

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Key Concepts

Molarity

Molarity is a concentration unit defined as the number of moles of solute per liter of solution. It enables chemists to understand and control the proportions of components in a solution, making it fundamental for preparing solutions and performing quantitative reactions.

Volume Conversion

Volume conversion involves converting all volume measurements to liters when using molarity. Since molarity is expressed in moles per liter, converting milliliters to liters (by dividing by 1000) is a crucial step for accurate calculations.

Mole Calculation

Using the relationship between molarity, volume, and moles, the number of moles of solute can be calculated by multiplying the molarity of the solution by its volume in liters. This step bridges the concentration of a solution to the absolute quantity of the solute.

Molar Mass and Mass Calculation

The molar mass of a substance is the mass of one mole of that substance, typically expressed in grams per mole. Once the number of moles is known, the mass of the solute required can be determined by multiplying the moles by the molar mass, thus converting from moles to grams.

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