Question

1. A series of sulfate samples is to be analyzed by precipitation as BaSO4. If it is known that the sulfate content in these samples ranges between 20% and 55%, what minimum sample mass should be taken to ensure that a precipitate mass no smaller than 0.200 g is produced? What is the maximum precipitate mass to be expected if this quantity of sample is taken?

Answer 1

0.200g/20%

(0.200g/20)×100 = 1 gm

1 gm maximum precipitate mass to be expected if the quantity of sample is taken