Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

acids and bases:

chemistry - acids and bases:

QuestionAnswer
1. Bronsted-Lowry acid? proton donor
2. Bronsted-Lowry base? proton acceptor
3. Bronsted-Lowry acid-base reaction? reaction involving the transfer of a proton
4. Monoprotic acid? released one H+ per molecule
5. Diprotic acid? releases two H+ per molecule
6. Examples a monoprotic acid? HCl HNO3 CH3COOH
7. Example of a diprotic acid? H2SO4
8. pH? -log(10)[H+]
9. [H+]? 10^-pH
10. Decimal places for pH? 2DP
11. What is Kw used for? strong bases
12. Kw calculation? 10^-14/ [OH-] then put into pH
13. Calculating pH of solution [OH-] x (old volume / new volume) then put into Kw then into pH
14. Nitric acid and hydrochloric acids are? strong monoprotic acids
15. Carboxylic acids are? weak monoprotic acids
16. Sulfuric acids is? strong diprotic acid
17. sodium hydroxide and potassium hydroxide are? strong monoprotic bases
18. ammonia is? weak monoprotic base
19. Ba(OH)2 is? strong diprotic base
20. What is Ka used for? weak acids
21. Calculating Ka? Ka = [H+]^2 / [HA]
22. Pka? -log(10)(Ka)
23. How to calculate Ka from pKa? Ka = 10^-pKa
24. Units for Ka? moldm^-3
25. Bigger Ka value means? stronger acid
26. Smaller Ka value means? weaker acid
27. Bigger pKa value means? bigger pKa means weaker acid
28. Smaller pKa value means? smaller pKa means stronger acid
29. Correlation between temperature, Kw and pH? as temperature increases, kW increases so Ph decreases to oppose change when the equilibrium shifts right
30. Strong acid definition? covalent molecules that dissolve in water + completely dissociate
31. Where does the equilibrium lie for a reaction with a strong acid? fully dissociate so lies far right
32. Weak acid definition? covalent molecules that dissolve in water + partially dissociate
32. Where does the equilibrium lie for a reaction with a strong acid? lies far left so is a reversible reaction arrow
33. Definition of a base? any substance that reacts with an acid and accepts a proton from it
34. Definition of an alkali? any substance which produces OH- when in aqueous solution (all alkalis are bases)
35. If Ka<1? then acid is weak if Ka<1
36. If Ka>1? then acid is strong is Ka>1
37. Calculation for new concentration? new concentration = (amount in moles of solute) / (new total volume of solution) x 100
38. Endpoint? point in titration when volume of reactant (acid/alkali) added causes colour of indicator to change
39. Indicator? made from different dyes which change colour at different [H+(aq)] -> change over narrow pH range
40. Equivalence point? point rapid change of pH showing vertical inflection (volume same no. mol of H+ and OH-)
41. Arrow used for indicators? reversible
42. Inflection? vertical curve showing rapid pH change
43. Strong acid vs Weak base? equivalence point pH 3-8 initial = pH 1
44. Strong acid vs Strong base? equivalence point pH 3-10 initial = pH 1
45. Weak acid vs Strong base? equivalence point pH 6-10 initial = pH 3
46. Weak acid vs Weak base? equivalence point pH 3-4 no major inflection
47. Steps for neutralisation? 1- moles H+ and OH- 2- which in excess 3- conc = (left over mol/total vol) 4. put into pH
Created by: chachink
Popular Chemistry sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards