Sodium Chloride Electrolysis (1 Viewer)

[04er]

Hey we are doing a practical where we carry out electrolysis of sodium chloride, to identify, compare and explain the different products produced with dilute and concentrated salt solutions. Does anyone have a copy of this (or a similar) practical? If you do, could you please explain why oxygen and hydrogen are produced when dilute NaCl is electrolysed and why chlorine and hydrogen are produced with concentrated NaCl? Anything would be greatly appreciated.

 

[Heinz]

I did an assessment on this dot point. Hope it helps (i think i got full marks for it)

 

[04er]

I did an assessment on this dot point. Hope it helps (i think i got full marks for it)

dude you're my legend thank you so much!

 

[mr EaZy]

Hey, do we need to know the products of dilute aqueous brine in electrolysis as opposed to concentrateed?

 

[Heinz]

Hey, do we need to know the products of dilute aqueous brine in electrolysis as opposed to concentrateed?

The syllabus say that we should "analyse information from secondary sources to predict and explain the different products of the electrolysis of aqueous and molten sodium chloride" so i assume we need to know both dilute and aqueous.

 

[mr EaZy]

the thing is both dilute and concentrated solutions ARE Aqueous!
i was asking about "dilute and concentrated" not "dilute and aqeous"!

 

[nesstar]

i think its good to understand the difference between dilute and conc brine...but id say its more important to know conc, considering thats what they use in the processes we learnt...but it can't hurt to know both...