Ch.12 - SolutionsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: If you combine 25.1 g of a solute that has a molar mass of 25.1 g/mol with 100.0 g of a solvent, what is the molality of the resulting solution?

Problem

If you combine 25.1 g of a solute that has a molar mass of 25.1 g/mol with 100.0 g of a solvent, what is the molality of the resulting solution?

Solution

We’re being asked to calculate for the molality of an aqueous solution prepared by dissolving 25.1 g of solute in 100.9 g solvent


When calculating for molality, we use the following equation:

Molality (m)=moles of solutekg of solvent


We will calculate the molality of the solution using the following steps:

Step 1Calculate the moles of solute

Step 2: Calculate the mass of solvent in kg

Step 3: Calculate the molarity of the solution


Step 1: Calculate the moles of solute using molar mass

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