Year 12s: what will be the first way you research your future options? >>

Year 12s: what will be the first way you research your future options? >>

Year 12s: what will be the first way you research your future options? >>

calculating decrease in mass Zn electrode

Question: a daniell cell was set up using 100cm^3 of 1.0 moldm^3 copper(II)sulphate solution. the cell was allowed to produce electricity until the concentration of the copper(II)sulphate ions had decreased to 0.50moldm^3
calculate the decrease in mass of the zinc electrode.

I tried it and got an answer of 3.27g I am so confident that is wrong though :cool:

:cool:

I don't actually have an answer for this question but if someone could explain how they got their answer that would be wonderful :biggrin:

:biggrin:

(edited 10 years ago)

well what does 0.25 moles of Zn weight?

Original post by CasualSoul

I tried it and got an answer of 3.27g

I tried it and I got the same answer. We are either both right, or both wrong.

OP

Original post by JMaydom

well what does 0.25 moles of Zn weight?

16.35g are you sure that is the answer?

where did you get the 0.25 moles from though?

How did you work this out? Need help on this question please

Start writing the reaction equation.

wasn't this the same question as on our isa examination...

Please how do u work it out then???? Anyone Chemistry Genuises

When they then say how to carry out this experiment would I be right in saying find the decrease in mass and double it???

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