Calculate the mass/volume percent (m/v) for the solute in each of the following: a. 75 g of Na₂SO₄ in 250 mL of Na₂SO₄ solution

Verified step by step guidance

1. Identify the formula for mass/volume percent (m/v), which is given by: $\text{m/v , percent}=\left(\frac{\text{mass of solute (g)}}{\text{volume of solution (mL)}}\right)\times 100\mathrm{\%}$.
2. Substitute the given values into the formula: mass of solute = 75 g and volume of solution = 250 mL.
3. Calculate the ratio of the mass of the solute to the volume of the solution: $\frac{75\text{g}}{250\text{mL}}$.
4. Multiply the result by 100 to convert the ratio into a percentage.
5. Express the final result as a percentage, which represents the mass/volume percent of Na₂SO₄ in the solution.

Key Concepts

Mass/Volume Percent (m/v)

Mass/volume percent (m/v) is a concentration measurement that expresses the mass of a solute in grams per 100 mL of solution. It is calculated using the formula: (mass of solute in grams / volume of solution in mL) × 100. This metric is particularly useful in chemistry for quantifying the concentration of solutions, allowing for easy comparisons and calculations.

Solution Composition

A solution is a homogeneous mixture composed of a solute and a solvent. The solute is the substance being dissolved, while the solvent is the medium in which the solute is dissolved. Understanding the composition of a solution is crucial for calculating concentrations, as it directly influences the properties and behavior of the solution in chemical reactions.

Units of Measurement

In chemistry, precise units of measurement are essential for accurate calculations. Mass is typically measured in grams (g), while volume is measured in milliliters (mL) or liters (L). Familiarity with these units and their conversions is vital for performing calculations involving concentrations, ensuring that results are both accurate and meaningful.