Calculating Mass of Copper Deposited at Cathode

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  • เผยแพร่เมื่อ 21 ต.ค. 2024

ความคิดเห็น • 6

  • @thomaschirila6372
    @thomaschirila6372 11 หลายเดือนก่อน +2

    What are the units for the 193,000 in the equation? Where did you get it from?

    • @billstapleton2071
      @billstapleton2071  11 หลายเดือนก่อน +2

      It comes from the constant that the charge on one mole of electrons is a faraday, or 96500 coulomb mol-1. Then given that the mole ratio of Cu to electrons is 1:2, given both the Faradays and mole ratio are on the bottom, you multiply 96500 x 2 to get 193 000. Its complicated, hence why I simplified it for Year 12 Chemistry.

    • @thomaschirila6372
      @thomaschirila6372 11 หลายเดือนก่อน

      @@billstapleton2071 ok, you just didn’t put the units in the equation. Where I go to school, you can get almost and entire question wrong simply for not using units in the equation, and I can see why. Numbers are just numbers unless you specify what they are.

    • @billstapleton2071
      @billstapleton2071  11 หลายเดือนก่อน +1

      @@thomaschirila6372 sorry if I confused you! This video was only ever designed to be a support for my students with their practical task. The calculation is actually not part of our Year 12 Chemistry course, it is only used so we can get a theoretical mass calculation to compare against. FYI, you do not need to put units in most of the exam question answers, as they are stated in the question. Units shouldn't need to be included in equations, only for the final answers, but thats just my opinion! All the best with your study!

  • @Omixea
    @Omixea ปีที่แล้ว +1

    I love you bill

    • @billstapleton2071
      @billstapleton2071  11 หลายเดือนก่อน +1

      Lol thank you random stranger...always nice to be loved!