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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: XingLing on June 20, 2010, 10:12:04 PM

Title: Gravimetric analysis of BaSO4
Post by: XingLing on June 20, 2010, 10:12:04 PM

Hi, I need help calculating the % purity and % yield of the BaSO4 obtained as I encountered some problems and I could not find any help.... so pls help me, I would really appreciate it, thnx.... :(

BaCl2 + Na2SO4 --> BaSO4 + 2NaCl

The weight of the BaSO4 obtained is 0.2103g and the molar weight given is 233.33g/mol.
Molarity of SO42- obtained is 3.6051x10-5
Concentration of SO42- is 3.46921 g/L
 
The 25mL of Na2SO4 is used and 10mL of 10% BaCl2 is used to obtain the precipitate.


The mass of Na2SO4 and BaCl2 were not given

Title: Re: Gravimetric analysis of BaSO4
Post by: Borek on June 21, 2010, 02:53:53 AM

From the information you have given it is not clear what the question & problem is.