Question

Assume you have 1 L of a buffer solution and convert the concentration in molarity units to mass in grams using the molar mass of the components as a conversion factor.

Answer 1

To convert solution molarity to mass, multiply the volume of the solution by its molarity to find the number of moles, then multiply the moles by the molar mass of the solute to find the mass in grams.

Step-by-step explanation:

To convert the concentration of a buffer solution from molarity to mass in grams, you need to know the molar mass of the components. Let's take an example where we have a solution with a molarity of 1 M (1 mole/liter) and the solute has a molar mass of 58.44 g/mol (which is the molar mass of NaCl, for instance).

Steps to Convert Molarity to Mass

1. Determine the volume of the solution in liters. In this case, you have 1 L.
2. Calculate the number of moles of solute present in the solution by multiplying the volume of the solution by its molarity (moles = volume in liters × molarity).
3. Convert the number of moles to mass by multiplying by the molar mass of the solute (mass = moles × molar mass).

Using the example, for a 1 M solution of NaCl:

1. Calculate moles: 1 L × 1 M = 1 mole of NaCl.
2. Convert to mass: 1 mole × 58.44 g/mol = 58.44 grams of NaCl.

Therefore, 1 L of a 1 M NaCl solution contains 58.44 grams of NaCl.