Acid and Base Ch 15 and 16 7-2
acids <ul><li>1.  tastes sour. </li></ul><ul><li>2.  conducts an electric current. </li></ul><ul><li>3.  Causes certain dy...
Bases <ul><li>1.  tastes bitter. </li></ul><ul><li>2.  conducts an electric current. </li></ul><ul><li>3.  causes certain ...
Definition of Acids and Bases   <ul><li>An acid is a source of hydrogen ions (H + ) or hydronium ions (H 3 O +  ) in solut...
<ul><li>A base is a source of hydroxide ions (OH - ) </li></ul><ul><li>e.g. NaOH(s)  Na +  (aq)  +  OH -  (aq) </li></ul><...
Naming of acids  <ul><li>In a binary acid, the negative anion ends in -ide.  The name begins with the prefix  hydro-  , st...
<ul><li>2.  In an oxy acid ,  the negative anion ends in – ate ,   use the stem and the name  ends with  -ic acid.   </li>...
<ul><li>3.  In an oxy acid, if the negative anion ends in –ite, use the stem and the name ends with  -ous acid.  </li></ul...
Some Common Bases <ul><li>NaOH </li></ul><ul><li>KOH   </li></ul><ul><li>Ba(OH) 2   </li></ul><ul><li>Mg(OH) 2   </li></ul...
Learning Check <ul><li>Match the formulas with the names: </li></ul><ul><li>A. ___  HNO 2 1) hydrochloric acid </li></ul><...
Solution AB4 <ul><li>Match the formulas with the names: </li></ul><ul><li>A.  _4__   HNO 2 1) hydrochloric acid </li></ul>...
Learning Check  <ul><li>Acid, Base  Name </li></ul><ul><li>or Salt </li></ul><ul><li>CaCl 2  ______ _________________ </li...
Solution AB5 Acid, Base  Name or Salt CaCl 2  salt calcium chloride KOH base potassiuim hydroxide Ba(OH) 2  base barium hy...
B. Definitions <ul><li>Arrhenius  - In aqueous solution… </li></ul>HCl + H 2 O  H 3 O +  + Cl –   <ul><ul><li>Acids   form...
B. Definitions <ul><li>Arrhenius  - In aqueous solution… </li></ul><ul><ul><li>Bases  form hydroxide ions (OH - ) </li></u...
B. Definitions <ul><li>Brønsted-Lowry </li></ul>HCl + H 2 O    H 3 O +  + Cl - <ul><ul><li>Acids   are proton (H + ) dono...
Conjugate acid base pairs <ul><li>conjugate base :  the species that remains after an acid has given up a proton   </li></...
NH 3  + H 2 O   NH 4 +  + OH - acid base conjugate base conjugate acid
<ul><li>In the two examples water first acts as a base, then as an acid.  </li></ul><ul><li>Any species which can both acc...
Br  – HSO 4 - CO 3 2- HBr H 2 SO 4 HCO 3 - <ul><li>Give the conjugate acid for each of the following: </li></ul>
<ul><li>List the conjugate acids for the following Bronsted bases </li></ul><ul><li>OH  - </li></ul><ul><li>CO 3   2-   </...
F  - H 2 PO 4 - H 2 O HF H 3 PO 4 H 3 O + <ul><li>Give the conjugate base for each of the following: </li></ul><ul><li>Pol...
<ul><li>List the conjugate bases for the following Bronsted acids </li></ul><ul><li>H 2 SO 4   </li></ul><ul><li>HPO 4 2- ...
Review 2:  Name the acid, base, conjugate acid and base for each reaction. CH 3 NH 2   +  H 2 O   CH 3 NH 3 +   +  OH  - H...
Review 2:  Name the acid, base, conjugate acid and base for each reaction. H 2 PO 4 2-   +  OH -    HPO 4 -   +  H 2 O HCN...
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Blog.7 2.Acid And Base

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Blog.7 2.Acid And Base

  1. 1. Acid and Base Ch 15 and 16 7-2
  2. 2. acids <ul><li>1. tastes sour. </li></ul><ul><li>2. conducts an electric current. </li></ul><ul><li>3. Causes certain dyes ( indicators) to change color. </li></ul><ul><li>4. Liberates hydrogen when it reacts with certain metals. </li></ul><ul><li>5. neutralizes basic solutions to form salts. </li></ul>
  3. 3. Bases <ul><li>1. tastes bitter. </li></ul><ul><li>2. conducts an electric current. </li></ul><ul><li>3. causes certain dyes ( indicators) to change color. </li></ul><ul><li>4. feels slippery. </li></ul><ul><li>5. neutralizes acid solution to form salts. </li></ul>
  4. 4. Definition of Acids and Bases <ul><li>An acid is a source of hydrogen ions (H + ) or hydronium ions (H 3 O + ) in solution. </li></ul><ul><li>HCl(aq) + H 2 O(l) H 3 O + (aq) + Cl - (aq) </li></ul>
  5. 5. <ul><li>A base is a source of hydroxide ions (OH - ) </li></ul><ul><li>e.g. NaOH(s) Na + (aq) + OH - (aq) </li></ul><ul><li>e.g. NH 3 (aq) +H 2 O(l) NH 4 + (aq) + OH - (aq) </li></ul>
  6. 6. Naming of acids <ul><li>In a binary acid, the negative anion ends in -ide. The name begins with the prefix hydro- , stem and ends with -ic acid. </li></ul><ul><li>hydro______ ic acid </li></ul><ul><li>HF </li></ul><ul><li>HCl </li></ul><ul><li>HBr </li></ul>hydro flour ic acid hydro chlor ic acid Hydro brom ic acid stem stem
  7. 7. <ul><li>2. In an oxy acid , the negative anion ends in – ate , use the stem and the name ends with -ic acid. </li></ul><ul><li>______ ic acid </li></ul><ul><li>HNO 3 </li></ul><ul><li>H 2 SO 4 </li></ul><ul><li>H 3 PO 4 </li></ul><ul><li>CH 3 COOH </li></ul>nitric acid phosphoric acid sulfuric acid acetic acid
  8. 8. <ul><li>3. In an oxy acid, if the negative anion ends in –ite, use the stem and the name ends with -ous acid. </li></ul><ul><li>_______ ous acid </li></ul><ul><li>HNO 2 </li></ul><ul><li>H 2 SO 3 </li></ul><ul><li>H 3 PO 3 </li></ul>nitrous acid sulfurous acid phosphorous acid
  9. 9. Some Common Bases <ul><li>NaOH </li></ul><ul><li>KOH </li></ul><ul><li>Ba(OH) 2 </li></ul><ul><li>Mg(OH) 2 </li></ul><ul><li>Al(OH) 3 </li></ul>Sodium hydroxide Potassium hydroxide Barium hydroxide Magnesium hydroxide Aluminum hydroxide
  10. 10. Learning Check <ul><li>Match the formulas with the names: </li></ul><ul><li>A. ___ HNO 2 1) hydrochloric acid </li></ul><ul><li>B. ___ Ca(OH) 2 2) sulfuric acid </li></ul><ul><li>C. ___ H 2 SO 4 3) sodium hydroxide </li></ul><ul><li>D. ___ HCl 4) nitrous acid </li></ul><ul><li>E. ___ NaOH 5) calcium hydroxide </li></ul>
  11. 11. Solution AB4 <ul><li>Match the formulas with the names: </li></ul><ul><li>A. _4__ HNO 2 1) hydrochloric acid </li></ul><ul><li>B. _5__ Ca(OH) 2 2) sulfuric acid </li></ul><ul><li>C. _2__ H 2 SO 4 3) sodium hydroxide </li></ul><ul><li>D. _1__ HCl 4) nitrous acid </li></ul><ul><li>E. _3__ NaOH 5) calcium hydroxide </li></ul>
  12. 12. Learning Check <ul><li>Acid, Base Name </li></ul><ul><li>or Salt </li></ul><ul><li>CaCl 2 ______ _________________ </li></ul><ul><li>KOH ______ _________________ </li></ul><ul><li>Ba(OH) 2 ______ _________________ </li></ul><ul><li>HBr ______ _________________ </li></ul><ul><li>H 2 SO 4 ______ __________________ </li></ul>
  13. 13. Solution AB5 Acid, Base Name or Salt CaCl 2 salt calcium chloride KOH base potassiuim hydroxide Ba(OH) 2 base barium hydroxide HBr acid hydrobromic acid H 2 SO 4 acid sulfuric acid
  14. 14. B. Definitions <ul><li>Arrhenius - In aqueous solution… </li></ul>HCl + H 2 O H 3 O + + Cl – <ul><ul><li>Acids form hydronium ions (H 3 O + ) </li></ul></ul>acid H H H H H H Cl Cl O O – +
  15. 15. B. Definitions <ul><li>Arrhenius - In aqueous solution… </li></ul><ul><ul><li>Bases form hydroxide ions (OH - ) </li></ul></ul>NH 3 + H 2 O NH 4 + + OH - base H H H H H H N N O O – + H H H H
  16. 16. B. Definitions <ul><li>Brønsted-Lowry </li></ul>HCl + H 2 O  H 3 O + + Cl - <ul><ul><li>Acids are proton (H + ) donors. </li></ul></ul><ul><ul><li>Bases are proton (H + ) acceptors. </li></ul></ul>base acid conjugate base conjugate acid
  17. 17. Conjugate acid base pairs <ul><li>conjugate base : the species that remains after an acid has given up a proton </li></ul><ul><li>conjugate acid : the species that is formed when a base gains a proton </li></ul>
  18. 18. NH 3 + H 2 O  NH 4 + + OH - acid base conjugate base conjugate acid
  19. 19. <ul><li>In the two examples water first acts as a base, then as an acid. </li></ul><ul><li>Any species which can both accept and receive protons is called amphiprotic . (also known as amphoteric) </li></ul>
  20. 20. Br – HSO 4 - CO 3 2- HBr H 2 SO 4 HCO 3 - <ul><li>Give the conjugate acid for each of the following: </li></ul>
  21. 21. <ul><li>List the conjugate acids for the following Bronsted bases </li></ul><ul><li>OH - </li></ul><ul><li>CO 3 2- </li></ul><ul><li>NO 3 - </li></ul><ul><li>HCO 3 - </li></ul><ul><li>CN - </li></ul>H 2 O HCO 3 - HNO 3 HCO 3 HCN
  22. 22. F - H 2 PO 4 - H 2 O HF H 3 PO 4 H 3 O + <ul><li>Give the conjugate base for each of the following: </li></ul><ul><li>Polyprotic - an acid with more than one H + </li></ul>
  23. 23. <ul><li>List the conjugate bases for the following Bronsted acids </li></ul><ul><li>H 2 SO 4 </li></ul><ul><li>HPO 4 2- </li></ul><ul><li>HCO 3 - </li></ul><ul><li>H 3 O + </li></ul><ul><li>H 2 PO 4 - </li></ul>HSO 4 - PO 4 3- CO 3 2- H 2 O HPO 4 2-
  24. 24. Review 2: Name the acid, base, conjugate acid and base for each reaction. CH 3 NH 2 + H 2 O CH 3 NH 3 + + OH - H 3 PO 4 + H 2 O H 3 O + + H 2 PO 4 - HC 2 H 3 O 2 + H 2 O H 3 O + + C 2 H 3 O 2 - CH 3 NH 3 + + H 2 PO 4 - H 3 PO 4 + CH 3 NH 2 base base base base acid acid acid acid conjugate acid conjugate acid conjugate acid conjugate acid conjugate base conjugate base conjugate base conjugate base
  25. 25. Review 2: Name the acid, base, conjugate acid and base for each reaction. H 2 PO 4 2- + OH - HPO 4 - + H 2 O HCN + H 2 O CN - + H 3 O + NH 3 + H 2 O NH 4 + + OH - NO 3 - + HCO 3 - CO 3 2- + HNO 2 acid base acid acid base acid base base conjugate base conjugate base conjugate acid conjugate base conjugate acid conjugate acid conjugate base conjugate acid

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