Determining Ph (1 Viewer)

[Jaserius]

Hey guys,

can you determine the ph of a solution if an an acid is dissolved in it, e.g. carbonic acid, but you dont know the volume or concentration of the solution or the amount dissolved?

 

[currysauce]

yeah, use an indicator

 

[Dreamerish*~]

you would titrate it against a base of known concentration, work out the concentration, and then the pH.

 

[thunderdax]

There is a way to do it mathematically. I think it was in the course a while ago, but its been chucked from the syllabus since then

 

[xiao1985]

@dreamish: but u then need to know the percentage ionisation of the acid...

i would say jsut use and pH meter...

 

[jamesy_1988]

it would be very hard to work it out mathematically cos of all the variables

 

[Dreamerish*~]

@dreamish: but u then need to know the percentage ionisation of the acid...

i would say jsut use and pH meter...

can you be my online chem tutor?
i want as many as possible

 

[xiao1985]

it would be very hard to work it out mathematically cos of all the variables

in fact, i change my mind...
if u do not know concentration/moles added/volume added, without pH determining processes (ie pH probe, indicator etc) it is impossible to determine the pH

other wise, u may use formula to work out...

@dreamish~ : sure... long as i don't have major exams/asmts coming up... =p

 

[jamesy_1988]

dreamish if you want me to, just have to work around assessments

Email me if you are interested jamesy_1988@hotmail.com

Jamesy