Forensic Chem:pH

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Author:
minna528
ID:
37645
Filename:
Forensic Chem:pH
Updated:
2010-09-27 09:14:34
Tags:
Forensic Chem
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Description:
Understanding pH
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  1. pH is a measure of the concentration of ______ in a given solution
    hydrogen ions [H+]
  2. pH <7
    acid
  3. pH =7
    Netural
  4. pH>7
    Base
  5. The pH scale is logarithmic
    1 pH unit change = ___________
    10x more or less acidic/basic
  6. pH 2 is ____X _____ acidic than pH 4
    100X more
  7. pH 8 is ______X______ alkaline than pH 11
    1000X less
  8. Acid turn litmus paper:
    red
  9. _____have a sour taste
    acids
  10. ____ produce H3O+ in water
    Acids
  11. Acids react with metals to produce:
    hydrogen gas
  12. Bases turn litmus paper_____
    blue
  13. _____have a silppery/soapy feeling
    Bases
  14. ____ produce OH- in water
    bases
  15. Bases react with acids to produce a ______
    salt
  16. Strong acids have a pH of
    1,2
  17. weak acids are typically
    pH of 5,6
  18. Strong bases have a pH of
    13, 14
  19. Weak bases have a pH of typically
    8, 9
  20. an indicator is
    a chemical that changes color at different pH values
  21. indicator papers or solutions are:
    qualitative/ semi-quantitative
  22. pH meters are:
    quantitative

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