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I'm in A2 chemistry in neutralisation, the following question is in the topic of neutralisation and the topics mentioned in the title of the post 🙂: is the end point equal to the equivalence point in a titration? And when are they not equal (as I'm guessing they're not when you add too little or too much indicator) 🙂
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#2
It's actually dependant on the type of indicator as there are quite a few! The end point is the point at which the indicator changes colour so if you have the wrong indicator it is less likely to match the equivilance point ( the point where there is neutralisation) However with the right indicator, they are more likely to be equal. Don't worry about learning indicators though as they give you that part if required by the question usually with their pka values 
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#3
(Original post by Freedom physics)
I'm in A2 chemistry in neutralisation, the following question is in the topic of neutralisation and the topics mentioned in the title of the post 🙂: is the end point equal to the equivalence point in a titration? And when are they not equal (as I'm guessing they're not when you add too little or too much indicator) 🙂
I'm in A2 chemistry in neutralisation, the following question is in the topic of neutralisation and the topics mentioned in the title of the post 🙂: is the end point equal to the equivalence point in a titration? And when are they not equal (as I'm guessing they're not when you add too little or too much indicator) 🙂
http://alevelchemistrytuition.co.uk/...ase-titration/
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(Original post by godlypopo)
It's actually dependant on the type of indicator as there are quite a few! The end point is the point at which the indicator changes colour so if you have the wrong indicator it is less likely to match the equivilance point ( the point where there is neutralisation) However with the right indicator, they are more likely to be equal. Don't worry about learning indicators though as they give you that part if required by the question usually with their pka values
It's actually dependant on the type of indicator as there are quite a few! The end point is the point at which the indicator changes colour so if you have the wrong indicator it is less likely to match the equivilance point ( the point where there is neutralisation) However with the right indicator, they are more likely to be equal. Don't worry about learning indicators though as they give you that part if required by the question usually with their pka values
If i may, I'd also like to ask you this 🙂: at the end point, why is [HA] = [A⁻]? Where HA is the weak acid indicator and A⁻ is the conjugate base of it 🙂
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#5
(Original post by Freedom physics)
Thank you so much! That's a really satisfying answer!! 😄
If i may, I'd also like to ask you this 🙂: at the end point, why is [HA] = [A⁻]? Where HA is the weak acid indicator and A⁻ is the conjugate base of it 🙂
Thank you so much! That's a really satisfying answer!! 😄
If i may, I'd also like to ask you this 🙂: at the end point, why is [HA] = [A⁻]? Where HA is the weak acid indicator and A⁻ is the conjugate base of it 🙂
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#6
(Original post by Freedom physics)
Thank you so much! That's a really satisfying answer!! 😄
If i may, I'd also like to ask you this 🙂: at the end point, why is [HA] = [A⁻]? Where HA is the weak acid indicator and A⁻ is the conjugate base of it 🙂
Thank you so much! That's a really satisfying answer!! 😄
If i may, I'd also like to ask you this 🙂: at the end point, why is [HA] = [A⁻]? Where HA is the weak acid indicator and A⁻ is the conjugate base of it 🙂
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(Original post by charco)
Because that is the mid point of the weak acid which is the indicator. If both [HA] and [A-] have a colour then the mid-range colour is when they are in equal concentration.
Because that is the mid point of the weak acid which is the indicator. If both [HA] and [A-] have a colour then the mid-range colour is when they are in equal concentration.
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#9
(Original post by Freedom physics)
Thank you! This conversation has been VERY helpful! 😄
Thank you! This conversation has been VERY helpful! 😄
https://ibchem.com/drop/htm/aab/indicators.htm
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(Original post by charco)
No problem. You might like to take a look at this interactive I prepared:
https://ibchem.com/drop/htm/aab/indicators.htm
No problem. You might like to take a look at this interactive I prepared:
https://ibchem.com/drop/htm/aab/indicators.htm
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#11
(Original post by Freedom physics)
Sorry but i tried putting the link into a mobile browser and it said i didn't have the right plugins 🙂
Sorry but i tried putting the link into a mobile browser and it said i didn't have the right plugins 🙂
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#12
(Original post by Freedom physics)
Sorry but i tried putting the link into a mobile browser and it said i didn't have the right plugins 🙂
Sorry but i tried putting the link into a mobile browser and it said i didn't have the right plugins 🙂
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(Original post by godlypopo)
It should work on the computer, mobile phones do not tend to have flash
It should work on the computer, mobile phones do not tend to have flash
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