Calculate the molarity of a 350-mL solution containing 25.0 grams of sodium hydroxide (NaOH).
Question:
Calculate the molarity of a 350-mL solution containing 25.0 grams of sodium hydroxide (NaOH).
Molarity:
In preparing reagents for experiments, we must report the concentration of the solute. The concentration of solution expresses the amount of solute that is present. When we need to report the amount of solute in terms of moles, we can opt to use the concentration unit of molarity. To obtain the molarity, we take the ratio of the moles of solute dissolved and the volume in liters. In calculating for the molarity, we must also use the molar mass to convert the mass of a reagent from grams to moles.
Answer and Explanation: 1
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We must begin by determining the moles of NaOH that is present in the solution. The molar mass of NaOH is 40 grams per mole.
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Chapter 8 / Lesson 4What is molarity? What is molality? Compare molarity vs molality by viewing molality and molarity formulas, how to calculate molarity and molality, and examples.