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    the process that you saw in activity 14.7 is used for purification of copper. a thin plate of pure copper and a thick rod of impure copper are used as electrodes. copper from impure rod is sought to be transferred to the thin copper plate. which electrode should be attached to the positive terminal of the battery and why?

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    Free solutions for NCERT Solutions - Science , Class 8 Chapter 15 - Chemical Effects and Electric Current Exercise question 35. These explanations are written by Lido teacher so that you easily understand even the most difficult concepts

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    Q12) The process that you saw in Activity 14.7 is used for purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transfered to the thin copper plate. Which electrode should be attached to the positive terminal of the battery and why?

    Answer: Solution:

    A thick rod of impure copper should be attached to the positive terminal of the battery.

    The thin plate of copper should be attached to the negative terminal of the battery.

    This is because the copper ions from the positive terminal will get attracted to the negative terminal.

    The copper ions from the impure copper will get accumulated on the pure copper plate.

    Video transcript

    "hello everyone or welcome to yet another little homework session in today's class we are going to be doing a science problem so let's begin with the question the question here is the process that you saw in activity 14.7 is used for purification of copper a thin plate of pure copper and a thick rod of impure copper as used as electrodes copper from impure road is thought to be transferred to the thin copper plate which electrode should be attached to the positive terminal of the battery and why so here we have in the question a pure copper road and a thick road of impure copper and these both are used as electrodes so what we have to do is we have to transfer copper from impure road to thin copper plate and for that to take place which electrode should be attached to the positive terminal of the battery and why so friends what do you think which electrode should we attach to the positive terminal of the battery exactly thick rod of impure copper so let's see how and why so answer a thick road a thick road of impure copper a thick road of impure copper should be should be attached should be attached to the positive to the positive terminal of the battery of the battery so why we should attach thick rod of impure copper is that when we attach thick pure copper what happens is that copper ions from the positive terminal will get attached to the negative terminal so what happens so copper from the impure copper road will get accumulated in the in the pure copper plate and thereby we could transfer the copper from impure road to thin copper plate so a thick rod of impure copper should be attached to the positive terminal of the battery let's continue and and pure and pure copper plate pure copper plate should be attached to the should be attached to the negative terminal so i am attaching the positive terminal with impure copper road and negative terminal with pure copper plate so what happens so let's see what happens so this is because this is because copper ions copper ions from positive terminal from positive terminal will get will get attracted to the attracted to the negative will get attracted to the negative terminal so since the copper from the positive terminal will get attracted to the negative terminal what will happen the copper the copper the copper from impure road is transferred is transferred to the thin copper plate to the thin copper plate so what is happening here is that i am attaching thick road of impure copper to the positive terminal and thin plate of pure copper to the negative terminal so when i do this what will happen is that copper from the positive terminal will get attracted to the negative terminal and thereby i could transfer the copper from impure road to the copper thin copper plate so i have achieved my process so friends i hope you have understood the solution if you have any doubts or queries please comment below and if you like this video give it a thumbs up and for further such videos please subscribe to this channel till then thank you all "

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    The process that you saw in Activity 14.7 is used for purification of

    The process that you saw in Activity 14.7 is used for purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal

    Check sibling questions

    NCERT Question 12 - Chapter 14 Class 8 - Chemical Effects Of Electric Current

    Last updated at June 11, 2021 by Teachoo

    The process that you saw in Activity 14.7 is used for purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal of battery and why?

    Answer

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    Copper is positively charged, so it will get attracted to the negative electrode.

    Because positive charges attract negative charges

    As copper ions are deposited on the copper plate, the thin copper plate must be connected to the negative terminal of the battery.

    Hence, the impure copper rod is connected to the positive terminal of the battery. Next: Teachoo Questions →

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    The process that you saw in Activity 14.7 is used for the purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from an impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal of the battery and why?"

    The process that you saw in Activity 14.7 is used for the purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as elect ...

    The process that you saw in Activity 14.7 is used for the purification of copper. A thin plate of pure copper and a thick rod of impure copper are used as electrodes. Copper from an impure rod is sought to be transferred to the thin copper plate. Which electrode should be attached to the positive terminal of the battery and why?

    "

    AcademicPhysicsNCERTClass 8

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    Given:

    Activity 14.7 shows used for the purification of copper.

    To do:

    To determine which electrode should be attached to the positive terminal of the battery and why.

    Solution:

    Let us observe the activity and components used for this arrangement:

    1. A battery

    2. Two connecting wires

    3. Two copper plates connected to each terminal of the battery

    5. A copper sulfate solution

    Activity 14.7 shows the electrolysis process for the purification of impure copper. Now let us discuss which copper plate should be attached to the positive terminal of the battery:

    Impure copper should be the positive electrode in electrolysis:

    In electrolysis, the positive electrode

    (anode) (anode)

    is made of impure copper and the pure copper acts as a negative electrode

    (cathode) (cathode)

    . An impure copper rod should be attached to the positive terminal of the battery as the copper ions are positively charged and these positively charged copper ions are attracted by the copper plate which is attached to the negative terminal of the battery. In this type of arrangement, the copper ions from the impure rod get liberated into copper sulfate solution and the copper ions from the solution get deposited into the pure copper rod.

    Tutorialspoint

    Updated on 10-Oct-2022 13:25:09

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