How Do You Calculate Weight Percent Concentration of KCl in Water?

Thread starter rridl001
Start date Jan 26, 2012
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Concentration Percent Weight

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To calculate the weight percent concentration of KCl in a saline solution, first determine the mass of KCl by using its molar mass (approximately 74.55 g/mol) to convert moles to grams. For 2.440 moles, this results in about 182.5 grams of KCl. Next, calculate the total mass of the solution by adding the mass of KCl to the mass of water (10 L of water weighs approximately 10,000 grams). Finally, use the formula for weight percent concentration: (mass of solute / total mass of solution) x 100%. This method provides the weight percent concentration of KCl in the saline solution.

Jan 26, 2012

rridl001

Homework Statement

What is the weight percent concentration of a saline solution prepared by dissolving 2.440 mole of KCl in 10 L of water?

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Jan 26, 2012

tiny-tim

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