Why is HCl added to the fertiliser when finding the % of sulphate in lawn fertiliser? (2 Viewers)

[Karldahemster]

In terms of the chemistry involved?

 

[same1111]

Re: Why is HCl added to the fertiliser when finding the % of sulphate in lawn fertili

In terms of the chemistry involved?

Ensuring no CO32- is present. CO32- may precipitate with Ba2+ so HCl was added to acidify the solution and remove any carbonate ions that could be present, preventing the precipitation of barium salts with CO32-

 

[jazz519]

Re: Why is HCl added to the fertiliser when finding the % of sulphate in lawn fertili

My notes on this experiment (explains it in there):
https://drive.google.com/open?id=1KjoqXqO5_2JaTtLAzdxnbUWb3S8jchCL

 

[Karldahemster]

Re: Why is HCl added to the fertiliser when finding the % of sulphate in lawn fertili

My notes on this experiment (explains it in there):
https://drive.google.com/open?id=1KjoqXqO5_2JaTtLAzdxnbUWb3S8jchCL

Absolute legend!

 

[Karldahemster]

Re: Why is HCl added to the fertiliser when finding the % of sulphate in lawn fertili

My notes on this experiment (explains it in there):
https://drive.google.com/open?id=1KjoqXqO5_2JaTtLAzdxnbUWb3S8jchCL

One more thing, how would I write an equation for the addition of HCl to the fertiliser (we don't know what's in the fertiliser other than sulphate).

Could I say,

SO4 2-(s) + 2HCl(aq) = H2SO4(aq) + 2Cl(aq)

and then,
Ba 2+(aq) + SO4 2-(aq) → BaSO4(s)

Thanks

 

[jazz519]

Re: Why is HCl added to the fertiliser when finding the % of sulphate in lawn fertili

One more thing, how would I write an equation for the addition of HCl to the fertiliser (we don't know what's in the fertiliser other than sulphate).

Could I say,

SO4 2-(s) + 2HCl(aq) = H2SO4(aq) + 2Cl(aq)

and then,
Ba 2+(aq) + SO4 2-(aq) → BaSO4(s)

Thanks

We sort of do (the impurities are generally phosphates and carbonate)

 

[Karldahemster]

Re: Why is HCl added to the fertiliser when finding the % of sulphate in lawn fertili

We sort of do (the impurities are generally phosphates and carbonate)

If I were to write a net ionic equation for the addition of HCL to the fertiliser, would this be correct? http://prntscr.com/hbm5yo

 

[Omkar1966]

Re: Why is HCl added to the fertiliser when finding the % of sulphate in lawn fertili

My notes on this experiment (explains it in there):

can you please resend this the link doesnt work thanks