Multiple Choice (3 Viewers)

[jk412]

which one is B equal or greater?

Equal. The degree of ionisation won't affect the volume needed, the pH of the titration at the equivalence point just won't be 7.

 

[JustinLy007]

I think 5 is D..... Due to itself being a transuaranic element non existent... so exisiting with element 102 rather than element 16 itself?

 

[leesh95]

15 is C?

I got c

 

[leesh95]

I think 5 is D..... Due to itself being a transuaranic element non existent... so exisiting with element 102 rather than element 16 itself?

It asked what group the element would be in though not the period

 

[AfkForSoR]

Equal. The degree of ionisation won't affect the volume needed, the pH of the titration at the equivalence point just won't be 7.

But a weak acid does not completely ionise, so it will keep ionising as the titration begins so basically when the base things it has neutralised all of the acid, it will ionise another H+ for the base to ionise :. it would require more volume than a strong acid which has a set amount of H+ in the beginning of the titration. I'm like 98% sure, but guess we'll have to see

 

[superSAIyan2]

I think 5 is D..... Due to itself being a transuaranic element non existent... so exisiting with element 102 rather than element 16 itself?

do you understand what a group in the periodic table is?

 

[Recondit]

16/20 -- dont know why but I thought acetic acid was triprotic, [18] was a bad silly mistake from me

 

[AfkForSoR]

15 is C, it was 10 and 990 you had to read carefully second column was "Volume ADDED" so you add to the original sample 990 + 10 = 1000. and use c1v1=c2v2

 

[jk412]

16/20 -- dont know why but I thought acetic acid was triprotic, [18] was a bad silly mistake from me

fwar nice recondit!!

 

[AfkForSoR]

question 5 correct answer is d because anything after 92 atomic number is transuranic 116 and 112 are both transuranic therefore answer is d

It said which period the element was in, and it was in the same period as the element "S-16"

 

[Queenroot]

I didn't even go through so much thinking. The cup said it was made from renewable resource and had picture of a tree -> cellulose

HAHAHA, me!

 

[vtx]

18/20... made silliest mistakes

 

[leesh95]

It said which period the element was in, and it was in the same period as the element "S-16"

Pretty sure it said group not period

 

[superSAIyan2]

fwar nice recondit!!

what you get? 12?

was it just me or did the first 7questions (except2) seem like they could be in the year 8or9 chem comp. Especialy question 4.

 

[babberz]

15 is C, it was 10 and 990 you had to read carefully second column was "Volume ADDED" so you add to the original sample 990 + 10 = 1000. and use c1v1=c2v2

wait, how'd u get this? what values did you use for c1 and c1 3M hcl was diluted to 5M hcl

 

[Menomaths]

wait, how'd u get this? what values did you use for c1 and c1 3M hcl was diluted to 5M hcl

There's a dot point that says 'identify that a change a change of pH is 10 fold' or something like that so you can work out it has to be 100 times more diluted (don't remember the question but that's how I derived the 100)

 

[jk412]

what you get? 12?

was it just me or did the first 7questions (except2) seem like they could be in the year 8or9 chem comp. Especialy question 4.

no how rude, i got 14

 

[Queenroot]

It said which period the element was in, and it was in the same period as the element "S-16"

It's in the 3rd group with all the lanthanoids or w/e, I put D lols

 

[babberz]

There's a dot point that says 'identify that a change a change of pH is 10 fold' or something like that so you can work out it has to be 100 times more diluted (don't remember the question but that's how I derived the 100)

oh yeh i got it now, damn

 

[nifkeh]

For 17 answer is greater than the volume as strong acids completely ionise and weak do not so it will continue to ionise as it is being titrated, requiring more volume to neutralise than the strong acid (i am 100% sure)

It doesn't I did the 2011 multiple choice Q about titration volumes and it's still the same amount of acid (despite weak or strong)