1.

Calculate the volume of the gaseous products at NTP obtained by the electrolysis of acidulated water using 10A current for 20 minutes

Answer» The quantity of electricity passed = current strength (I)xTime (t)= 10x20x60C=12000/96500 = 12/965 Faraday

I Faraday electricity generates 1 g equivalent substance in the electrode.

So 1 Faraday electricity will produce  1 g equivalent Hydrogen or 1g or 1/2 =0.5mole of hydrogen.at cathode.

and 1 Faraday electricity will simultaneously produce 1g equivalent or 8g of Oxygen or 1/4=0.25 mole Oxygen at anode

So total 0.75 mole of gas will be produced on electrolysis.

The volume of this 0.75 mole gas at NTP will be = 0.75x22.4L=16.8 L for passage of 1 Faraday of electricity.

Hence the passage of 12/965 Faraday electricity will produce 12/965 x16.8 L=02089L gas


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