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help 2

Posted: Wed Mar 31, 2021 12:52 pm
by Laila Camila
A laboratory received a sample of potassium chloride suspected of containing impurities. To analyze the degree of purity of the sample, we proceeded as follows:
0.2500 g of the crude KCl sample was taken, an excess of an AgNO3 solution was added which resulted in the formation of 0.2817 g of AgCl.

Calculate the percentage of KCl in the impure sample.
Ag + (aq) + Cl- (aq) AgCl (s)

Re: help 2

Posted: Wed Mar 31, 2021 1:06 pm
by ChenBeier
Convert the AgCl to mol , read the mol of KCl and convert back to mass of KCl.

Compare the with crued product.