# Electrolysis C/W contd. Variables help

1. Sep 18, 2010

I have the marked draft of my coursework, its 36/40 but I need to improve 3 things. I need to expand on the Variables I have listed on my coursework, i have done half of them but im having trouble on the others. Heres the vaiables, the bold is what ive added. Any help is much appreciated,

• Time – how long electrolysation happens for

• Current – how many amps travel to the electrode

• Temperature – effects particles kinetic energy

• Solution – type of ion

• Molarity of solution – mols/cm3 ; number of ions

• Charge of Ions -

• Quantity of solution -

• Size of electrodes -

• Distance between electrodes -

• Surface area of electrodes -

P.s Am i right in thinking the bottom three would be the same ; area exposed to electrolysation.

2. Sep 19, 2010

Could anyone help?

3. Sep 19, 2010

### Staff: Mentor

Distance between electrodes doesn't change their surface, but it changes the solution resistance.

4. Sep 19, 2010

Thankyou, would Charge be : amount/strength of charge and what would quantity be :/

5. Sep 19, 2010

### Staff: Mentor

Charge of ion is number of electrons that is has to gain (or lose) to become neutral.

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6. Sep 19, 2010

• Time – how long electrolysation happens for

• Current – how many amps travel to the electrode

• Temperature – effects particles kinetic energy

• Solution – type of ion

• Molarity of solution – mols/cm3 ; number of ions

• Charge of Ions - number of electrons needed to become neutral

• Quantity of solution -

• Size of electrodes - Area exposed to electrolysation

• Distance between electrodes - resistance of solution

• Surface area of electrodes - Area exposed to electrolysation

Isnt charge like this though - 1.6 x 〖10〗^(-19) Charge for every unit, so Cu2+ has a charge and 3.2 x 〖10〗^(-19) C and Fe3+ has a charge of 4.8 x 〖10〗^(-19) C.