Acid   Base Theories Sec. 19.1

Acid Base Theories Sec. 19.1 PowerPoint PPT Presentation


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Properties of Acids. Sour or tart tasteCan change the color of indicators Electrolytes in aqueous solutions. Properties of Bases. Bitter tasteFeel slipperyCan change the color of indicatorsElectrolytes in aqueous solutions. Naming Acids ( Formula HnX). See pg. 272 . Naming Bases. Follow same

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Acid Base Theories Sec. 19.1

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1. Acid – Base Theories (Sec. 19.1) Madison High School Mr. Ricks

2. Properties of Acids Sour or tart taste Can change the color of indicators Electrolytes in aqueous solutions

3. Properties of Bases Bitter taste Feel slippery Can change the color of indicators Electrolytes in aqueous solutions

4. Naming Acids ( Formula HnX) See pg. 272

5. Naming Bases Follow same rules as for naming ionic compounds Ex: NaOH is sodium hydroxide

6. Arrhenius Acids and Bases Acids ionize to produce H+ (HCl) Bases ionize to produce OH- (NaOH) Monoprotic acid - contains 1 H+ (HNO3) Diprotic acid - contains 2 H+ (H2SO4) Triprotic acids - contains 3 H+ (H3PO4) See pg. 588-589 for more examples

7. Brønsted-Lowry Acids and Bases Acids are hydrogen-ion donors Bases are hydrogen-ion acceptors More inclusive than Arrhenius theory Ex: NH3 is a base, carbonates are bases

8. Conjugate Acids and Bases A conjugate acid is formed when a base gains an H+ A conjugate base is what’s left after an acid donates an H+ A conjugate acid-base pair is 2 substances related by the gain or loss of a single H+ See pg. 591

9. Hydronium ion – a water molecule that gains an H+ (H3O+) Amphoteric substances can act as acids or bases (H2O)

10. Lewis Acids and Bases Acids accept a pair of electrons Bases donate a pair of electrons Most general acid-base theory

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