Chem practical 11

Card Set Information

Author:
kayekitty
ID:
159384
Filename:
Chem practical 11
Updated:
2012-06-19 19:12:42
Tags:
chem practical
Folders:

Description:
fuck
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user kayekitty on FreezingBlue Flashcards. What would you like to do?


  1. how do you draw a lewis electron diagram? do one for oxygen and oxygen ion
    • chem name
    • only valence electrons
    • if ions -> brackets
    • and draw arrows moving electrons
    • structural diagrams include bonds
    • each line = 2 electrons
  2. atm = ?
    760 torr = 760 mmHg = 1 atm = 101.3 kPa
  3. cobalt chloride paper used to test for?
    water
  4. lime water?
    carbon dioxide
  5. violet flame? red flame?
    • violet - most energy
    • red - least
  6. molar volume equation?
    Vm = V/n
  7. naming with different number o oxygens
    • hypo _____ite -2
    • ________ite -1
    • _________ate - regular
    • per _______ate +1
  8. acids naming w/ diff number oxygen
    • ate -> ic
    • ite -> ous
  9. number line for ionic, polar covalent, covalent bonds
    • minus electroneg
    • 3.3 - 1.7 - 0.4 - 0
    • ionic, polar cov, coval
  10. what does bicarbonate spontaneously do?
    H2CO3 -> H2O + CO2
  11. hydrogen is what with metal and nonmetal?
    • + metal = ionic compound
    • + nonmetal = covalent
  12. metal oxides = ? non-metal oxides =?
    • metal oxides = solids
    • non-metal = gases
  13. complete combustion
    fuel + oxygen -> x dioxide + water
  14. incomplete combustion
    • some oxides w/ less oxygen content
    • e.g. carbon monoxide nitrogen monoxide
    • depends on amount oxygen present
  15. how to collect carbon dioxide ?
    • calcium carbide in water -> co2
    • downward displacement
    • allow air to flow in with accurate amount o gas
    • insert splint
  16. single displacement metal oxide + water =?
    • metal oxide + water -> H2 + MOH <- hydroxide
    • non-metal oxide + water -> H2 + acid
  17. metal + water -> ?
    h2 + MOH
  18. %difference = %error
    theoretical - predicted  / theoretical
  19. dalton's law
    pgas = ptotal - ph20
  20. glass thingy used for titration
    and cup thingy
    • burette
    • Erlenmeyer flask
  21. endpoint
    • point when color changes and remains not too dramatic
    • slightest
  22. standard solution
    exactly known concentration
  23. to dilute solution use what?
    two ways
    • pipette
    • volumetric flask
    • only pour out half at time
    • from solid or by dilution w/ another liquid
  24. beer's law
    as concetration increase, absorbance o solution increases
  25. %yield
    actual yield/theoretical yield
  26. ionic materials vs molec compounds
    • ionic = soluble
    • conductivity = yes ionic in water
    • ionic high melting points
    • ionic generally crystal
    • ionic very hard generally
    • molec = nonmet + nonmet
    • ionic = met + met
  27. decomposition of bicarbonate
    produces water + carbon dioxide + salt
  28. # decimal places in ph = ?
    • # significant digits
    • pH = 11.00 <-- 2 decimal places
    • [H+(aq)] = 1.0 x 10-2 mol/L
  29. formula to calculate pH
    pH = -log[H+(aq)]

What would you like to do?

Home > Flashcards > Print Preview