ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: VCE_2012 on February 08, 2012, 09:31:16 pm

Title: Improvements in Gravimetric (Fetiliser)
Post by: VCE_2012 on February 08, 2012, 09:31:16 pm

So what improvements should be taken to mind?

Title: Re: Improvements in Gravimetric (Fetiliser)
Post by: Studyinghard on February 08, 2012, 11:54:47 pm

Do you mean errors?

If so in general for gravimetric analysis:


a.   Incomplete precipitation results in a value for the percentage of analyte in the sample that is too low.
b.   Incomplete drying of the sample results in a value for the percentage of analyte in the sample that is too high
c.   Other ions in the sample may also be precipitated resulting in a value for the percentage of analyte in the sample that is too high