Compute the concentration of lead in the snow in ppm

Reference no: EM13288537

Lead (II) forms a very stable 1-1 complex with the logan dithizone. the complex if formed in basic aqueous solution and extracted into chloroform. the complex has a molar absorptivity of 6.5 x 10^4 at 520 nm. An analyst collects and melts 555.0 g of snow. a 100 g portion of the resulting water is made basic with ammonia, treated with cyanide and to mask other metal ions, and then extracted with 10.0 mL of a solution of dithizone in chloroform. the chloroform solution is transferred to a 5.0 cm cell and an absorbance of 0.0488 is measured at 520 nm. calculate the concentration of lead in the snow in ppm.

Reference no: EM13288537

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