Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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
share
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

Syre/base

QuestionAnswer
Hvad er en hydron? Det er en H+ ion der kan afgives af en syre og optages af en base.
Hvad forstås ved korrespoderende syre-basepar? Den syre/base som en anden base/syre bliver til når disse reagerer med enten H+ eller OH-.
Hvad er en amfolyt? Et molekyle der kan reagere både som en syre og en base. Eks. på amfolyt: H3PO4 eller vand.
Hvad er vands ionprodukt? Ligevægtskonstanten for vands reaktion med sig selv. Kv=[OH-]*[H3O+]
Hvad forstås ved vands autohydronolyse? I vands tilfælde, betyder det, at vand står og reagerer med sig selv (til syre og base.
Forklar begrebet 'pH-værdi'. Fortæller hvor meget H3O+ der er i en opløsning, og om denne er sur eller basisk. pH=-log([H30+])
Forklar begrebet 'pOH-værdi'. Fortæller hvor meget OH- der er i en opløsning, og om denne er sur eller basisk. pH=14-(-log([OH-])
Definér og forklar styrkekonstant(Ks). Ks=([B]*[H3O+])/[S] Jo større Ks er, jo stærkere er syren.
Hvad er syreeksponenten(pKs)? pKs=-log(Ks) Jo større pKs er, jo svagere er syren.
Hvad er en polyhydron syre? En syre hvor flere hydroner kan afgives.
Forklar ordet 'puffersystem'. En opløsning hvor både en syre og dens korresponderende base er, og denne gør at pH-ændringen bliver mindsket
Opskriv pufferligningen. pH=pKs+[B]/[S] kan også skrives som: pH=pKs+(nB)/(nS) (altså stofmængder).
Forklar hvad en titrerkurve er. Det er en kurve, hvor vi kan aflæse ækvivalenspunktet og se springet fra syre til base(eller omvendt). Vi kan også aflæse hvor mange mL der er tilsat ved de forskellige pH-værdier.
Created by: NinaIF
 

 



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