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Factors Affecting Solubility

Need help preparing for the General Chemistry section of the MCAT? MedSchoolCoach expert, Ken Tao, will teach you about the factors affecting solubility in solutions. Watch this video to get all the MCAT study tips you need to do well on this section of the exam! There are several factors contributing to the solubility of solids and gases in water. Primarily, we will consider the effects of changing temperature and altering pressure on solubility. For solids such as sugar and salt, the primary factor we are able to manipulate to affect solubility is temperature. Temperature is directly proportional to the solubility of solids in water. This relationship can be visually depicted as: For gases dissolved in liquids, such as oxygen in a body of water or in your bloodstream, there are two important factors that determine solubility. As opposed to solids, higher temperatures decrease the solubility of gasses in a liquid solvent. For example, the gaseous carbon dioxide in a carbonated beverage will bubble out more quickly if stored at warm temperatures. Secondly, a greater external pressure applied to the solution increases gaseous solubility. Considering a closed bottle of carbonated soda, the pressure trapped in the sealed container is high enough to force the carbon dioxide to remain dissolved in solution. If you open the bottle, the solution is exposed to a lower pressure in the atmosphere, decreasing solubility. MEDSCHOOLCOACH To watch more MCAT video tutorials like this and have access to study scheduling, progress tracking, flashcard and question bank, download MCAT Prep by MedSchoolCoach IOS Link: https://play.google.com/store/apps/de... Apple Link: https://apps.apple.com/us/app/mcat-pr... #medschoolcoach #MCATprep #MCATstudytools