Calculate the COD of an effluent sample if 25 c.c. of the effluent sample required 8.3 c.c. of 0.001M $K_2Cr_2O

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Calculate the COD of an effluent sample if 25 c.c. of the effluent sample required 8.3 c.c. of 0.001M

$K_2Cr_2O_7$ for oxidation.

written 3.9 years ago by

teamques10 ★ 69k

• modified 3.9 years ago

engineering chemistry

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written 3.9 years ago by

teamques10 ★ 69k

• modified 3.9 years ago

Data Given: $Volume \ of \ sample = 25\ c.c, \ \ \ Volume \ of \ K_2Cr_2O_7: \ 8.3\ c.c, \ \ \ Molarity \ of \ K_2Cr_2O_7:\ \ \ 0.001\ M$

$Since \ 1\ mole\ FAS \equiv 1\ mole\ K_2Cr_2O_7\equiv \dfrac{1}{2}mole\ of \ O_2$

$Hence, \ 8.3\ ml\ …

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