Help: (2 Viewers)

[Alkenes]

Hey guys!

• Need help with "01", cross 1 and cross 2.
• "02" - second last dot point
• "03" - 4, 5 and 6 (it is related to Vinegar dilution and titration)

Thanks

 

[Alkenes]

bump

 

[iSplicer]

Show us what you understand already and which particular parts you need help with.

 

[Alkenes]

see my post above....just tell me briefly about the dot points mentioned

Show us what you understand already and which particular parts you need help with.

 

[Alkenes]

bump

 

[Alkenes]

bumppp

 

[barbernator]

01,x1,If we don't wash the glassware correctly before commencing our titration, the residual solution within the glassware that is not of the substance that it is supposed to be washed with can alter the pH of the titrant or _____(the name of the other one) and hence affect the accuracy and validity of our experiment. As pH is being changed within the solutions, the known concentration of the titrant becomes unknown, or the concentration of the aliquot is not reflective of the solution it came from.

x2, NaOH, it is deliquescent (absorbs moisture from air) hence, the H+ concentration cannot be known accurately as there is no accurately known formula of the solution.
Bricks(they dont fit in a burette)

02, dont really know what this is referring to unless there is an example. You will have to be able to identify QUANTATIVE(measurement/quantifyable) errors given a certain faulty procedure.

03, 4. I again dont have context, yet by diluting vinegar, you increase the accuracy of your titration experiment by a factor of 10 for each pH dilution of 1.
5. Need the results to see
6. Equivalence point is when the neutralisation is complete. As salts that are produced can be acidic or basic, the equivalence point doenst have to =pH7.

 

[madharris]

01,x1,If we don't wash the glassware correctly before commencing our titration, the residual solution within the glassware that is not of the substance that it is supposed to be washed with can alter the pH of the titrant or _____(the name of the other one) and hence affect the accuracy and validity of our experiment. As pH is being changed within the solutions, the known concentration of the titrant becomes unknown, or the concentration of the aliquot is not reflective of the solution it came from.

I thought you usually knew the aliquot not the titrant (mind you it doesn't matter but I've always used the pipette for the standard solution and the burette for the unknown solution)

 

[barbernator]

I thought you usually knew the aliquot not the titrant (mind you it doesn't matter but I've always used the pipette for the standard solution and the burette for the unknown solution)

hey sorry, thats right! got them the wrong way around