A solution of acetic acid (CH₂COOH) and water is boiling at 103.1 °C. A sample of the vapor above the solution is cooled until it condenses. This condensed sample is analyzed, and turns out to be 50.% acetic acid by mass. Calculate the percent by mass of acetic acid in the boiling solution. Here's some data you may need: acetic acid water % normal boiling point 118. °C 100. °C density 1.1 1.00 g mL mL vapor pressure at 103.1 °C 568. torr 846. torr Be sure your answer has the correct number of significant digits. Note for advanced students: you may assume the solution and vapor above it are ideal.

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.