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CHEM 280 Laboratory Pre-Lab Experiment 10: Chemical Reactions and Equations 2024/2025
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CHEM 280 Laboratory Pre-Lab Experiment 10: Chemical Reactions and Equations 2024/2025
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CHEM 280 Laboratory Pre-Lab Experiment 10: Chemical Reactions andEquations 2024/2025
Acids: Properties & Examples - (answer)-sour taste
-dissolves many metals
-blue litmus paper turns red
Bases: Properties & Examples - (answer)-have a bitter taste
=probably due to alkaloids in organic bases found in plants
-slippery feel
-red litmus paper turns blue
Arrhenius Definition of Acids - (answer)Produces H+ (which bond to water molecules)
Hydronium ion - (answer)In water, H⁺ ions *always* associate with H₂O molecules
Chemist often use H⁺ (aq) and H₃O⁺ interchangeably to refer to this ion
Arrhenius Definition of Bases - (answer)produces OH⁻ ions in aqueous solution
Bronsted-Lowry Definition of Acids - (answer)an acid is a proton *donor*
Bronsted-Lowry Definition of Bases - (answer)a base is a proton *acceptor*
, Bronsted-Lowry Defintion of Acids/Bases (Example) -
(answer)*NH₃(aq)*+H₂O↔*NH₄⁺*+OH⁻(aq)
base→conjugate acid
NH₃(aq)+*H₂O*↔NH₄⁺+*OH⁻*(aq)
acid→ conjugate base
Amphoteric - (answer)substances that can act as acids and bases
-water H₂O
-NH₃ & NH₄⁺
Conjugated acid-base pair - (answer)NH₃ & NH₄⁺ are often referred as this and are related to
each other by the transfer of a proton
*NH₃(aq)*+H₂O↔*NH₄⁺*+OH⁻(aq)
base→conjugate acid
NH₃(aq)+*H₂O*↔NH₄⁺+*OH⁻*(aq)
acid→ conjugate base
Bronsted-Lowery (Base to) - (answer)*NH₃*+H₂O↔*NH₄⁺*+OH⁻
base→conjugate acid
NH₄⁺+*OH⁻*↔NH₃+*H₂O*
base→conjugated acid
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