please answer this question:

Asked by prernamehta | 22nd Apr, 2010, 10:45: AM

Expert Answer:

        NaCl   +    AgNO3         AgCl    +   NaNO3

MM = 58.5 g                                  MM = 143.5 g

1 mole of NaCl gives 1 mole of AgCl

58.5 g of NaCl gives 143.5 g of AgCl

0.50 g of NaCl gives = (143.5g * 0.50 g) / 58.5 g of AgCl

                                     = 1.23 g of AgCl

But the amount of AgCl precipitated was 0.90 g.

Percentage purity = ( 0.90 g / 1.23 g) * 100 = 73.2 %

 

Answered by  | 22nd Apr, 2010, 12:32: PM

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