Actually its quite simple...unfortunately I don't remember exactly how to do it off the top of my head. I'll get back to it later, I'm a bit busy at the moment. The method is usually introduced at the end of the electrochemistry chapter in general chemistry texts.

Or - 1A is a Coulomb/sec, you know the current, you know the charge per second. Every two electrons give one Cl2 particle. You know the charge, you know number of the Cl2 particles consumed per second. Just convert Coulombs to Avogadro number.

That's almost the same - Faraday constant is number of Coulombs in 1 mole of electrons :)

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I know this. One faraday constant is equal to one mole of electrons - this is equal to [tex]6.023 \times 10^{23} \times 1.6\times 10^{-19} = 96368 \frac {Coulomb}{mol}[/tex]

Dear Borek, you said one Ampere is one coulomb per second. Then 1,000 amperes are equal to 1,000 coulombs per second. This in turn gives 6.25*10^{21} electrons per second, which means about 0.01 moles of electrons per second. In the redox, two electrons are used as you stated; so 0.005 moles of chlorine are consumed. This means 7.368*10^{-4} kilograms of chlorine gas are used.

Am I correct, pals? Thank you very much for your help, you all.