Concentrations: amount of solute present in a given mass or volume of solution. % by Mass – %...
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Transcript of Concentrations: amount of solute present in a given mass or volume of solution. % by Mass – %...
• Concentrations: amount of solute present in a given mass or volume of solution.
• % by Mass – % solute = mass of solute/mass of solution x 100%
• A 10% glucose solution by mass contains 10.0 grams of glucose in 100 grams of solution. (90 grams of water and 10 grams of glucose)
• Molarity = number of moles of solute/number of liters of solution
• If 39.10 grams of potassium were added to 1.0 L of water, what would the molarity of this solution be?
• If approximately 11.5 grams were added to 1.0 liter of water, what would the molarity of this solution be?
Supersaturated Solution
• Ionization: acids or any molecular compound separates in solution to form ions.
• Dissociation: ionic compounds separates into its ions in solution
• Strong Acids: ionize close to 100% into H+ ions. (HCl; HNO3; H2SO4)
• Weak Acids: ionize less than 5% into ions (Acetic Acid)
• Strong (soluble) bases: dissociate completely in aqueous solution (NaOH; LiOH; KOH)
• Weak Bases: ionize slightly in aqueous solutions (NH3)
• Salt: contains a cation (other than H+) and an anion (other than OH-)
• Salts are formed when acids react with bases.