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Acids

Acids. Acids. Dissolve in water – sour taste Litmus dye: blue → red React with some metals Produce hydrogen gas and a salt. Arrhenius Definition . Acid – releases H + ion in water. polyprotic acids. H 2 SO 4. Bronsted-Lowry Definition. Acid – proton donor (H + ).

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Acids

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  1. Acids

  2. Acids • Dissolve in water – sour taste • Litmus dye: blue → red • React with some metals • Produce hydrogen gas and a salt

  3. Arrhenius Definition • Acid – releases H+ ion in water

  4. polyprotic acids H2SO4

  5. Bronsted-Lowry Definition • Acid – proton donor (H+)

  6. Can damage tissue If concentrated Found in many foods Acid Strength • Strong acids – ionize all the way • Hydrochloric Acid • Sulfuric Acid • Nitric Acid • Weak acids – only ionize a little • Acetic Acid • Lactic Acid • Ascorbic Acid • Phosphoric Acid • Citric Acid

  7. pH • The concentration of H+ ion in pure water is 1 x 10-7 M. • pH stands for power of H+ ion. • If concentration is 1 x 10-e then pH is the negative of the exponent of the H ion conc. • If conc. Is not 1 x, then pH = -log10[H+] • Therefore, in pure water, the pH = 7 • If pH < 7 then the solution is acidic • If pH > 7 then the solution is basic • pH = 7 is neutral

  8. 7.3 to 7.5 shampoo pH balanced shampoo Oven and drain cleaner Hair Remover

  9. Antacids • Are of course bases • Neutralize stomach acid (HCl) • More is not better

  10. H26 – C11 • 14, 16, 17, 19, 20, 24, 25, 28 - 31, 33, 51 - 55, 57, 62, 63, 74, 79

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