Acids bases by By MUHAMMAD FAHAD ANSARI 12 IEEM 14

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MUHAMMAD FAHAD ANSARI
12 IEEM 14

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Acids bases by By MUHAMMAD FAHAD ANSARI 12 IEEM 14

  1. 1. ACIDS AND BASESMuhammad Fahad Ansari 12IEEM14
  2. 2. What is an acid? Defined three ways:  Arrhenius Acids: release H+ ions (protons) in aqueous solution.  Bronsted-Lowry Acids: are proton donors.  Lewis Acids: are electron pair acceptors
  3. 3. What is a base?• Defined three ways: – Arrhenius Bases: release OH- ions in aqueous solution – Bronsted-Lowry Bases: are proton acceptors – Lewis Bases: are electron pair donors.
  4. 4. Neutralization Reactions A neutralization reaction is an acid and base combining to form water H + OH + - → H 2O acid base neutral
  5. 5. Acids properties 1. Conduct electricity (strong acids) 2. Change blue litmus to red 3. Have a sour taste 4. React with bases to neutralize their properties 5. React with active metals to liberate hydrogen 6. pH values 6-0
  6. 6. Bases properties  Base properties 2. Conduct electricity (strong bases) 3. Change red litmus to blue 4. Have a slippery feeling (like soap) 5. React with acids to neutralize their properties 6. pH values 8-14
  7. 7. pH Scale pH 0 Acidic  The pH scale is used to 1 measure how acidic orlemon juice 2 3 basic is a liquid. vinegar 4  pH measures the 5 6 concentration of d water 7 Neutral hydrogen ions (H+) and 8 hydroxide ions (OH-). baking soda 9 detergent 10  The scale goes from 0 11 through 14. Distilled ammonia 12 water is 7, so is called 13 neutral. 14 Basic
  8. 8. IndicatorsAn indicator is a large organic molecule that workssomewhat like a "color dye." Indicator Acid Base Red litmus paper Stays same Turns blue Blue litmus paper Turns red Stays same Bromophenol blue Yellow Stays blue Phenolphtalein Colorless Pink
  9. 9. Natural indicators There are natural indicators for acids and bases, and we may find them in our kitchen or garden!  Red rose flowers  Bougainvillea flowers  Red cabbage  Blue berries
  10. 10. Acids and bases reactions The acids react with bases, forming salts ACID + BASE → SALT + WATER HCl + NaOH → NaCl + H2O H-OH

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