a 100ml sample of 2 M NaCl was electrolysed for 25 min with a current of 1,45 A.what is the concentration of of hypochlorite produced?

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  • 11 months ago

    hypochlorite has a charge of –e, so it takes one electron per atom.

    1.45 amps = 1.45 C/s

    1.45 C/s x 25 min x 60s/min x 1 electron/1.602e-19 C = 1.358e22 electrons.

    or 1.358e22 molecules of hypochlorite, which is ClO⁻ which is 35.5+16 = 51.5 g/mol

    6.022e23 molecules/mole Avogadro constant

    1.358e22 molecules / 6.022e23 molecules/mole = 0.0225 mol

    0.0225 mol x 51.5 g/mol = 1.161 g

    since you have 0.1 L, concentration is 11.61 g/L

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