Sumarna , Sumarna (1996) Substitusi seng dengan aluminium pada baterai seng - karbon. Undergraduate thesis, FMIPA UNDIP.
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Abstract
Baterai merupakan sel elektrokimia yang menghasilkan energi listrik. Baterai seng-karbon menghasilkan voltase sebesar 1,5 Volt. Baterai tersebut menggunakan seng sebagai anoda dan Mn02 sebagai katoda. Logam seng mempu-nyai potensial reduksi standar sebesar -0,76 Volt. Dengan mengganti anoda seng memekai aluminium yang memiliki potensial reduksi standar -1,66 Volt, maka voltase bate¬rai akan menjadi 2,4 Volt, tetapi dalam penelitian hanya 1,585 Volt. Untuk mengetahui penggunaan aluminium sebgai elek-troda dilakukan percobaan yaitu melepas elektroda seng dan mengganti dengan lempeng aluminium. Kemudian diukur voltase dan kuat arusnya. Untuk mengetahui reaksi yang terjadi pada anoda dilakukan identifikasi cairan yang keluar dari baterai. Penelitian menhasilkan voltase dan kuat anus baterai aluminium lebih rendah dari bateari seng. Hal ini dapat terjadi karena pemasangan yang kurang sempurna. Dari penelitian dapat disimpulkan bahwa voltase dan kuat anus baterai tak hanya ditentukan oleh rekasi redoks, tetapi oleh reaksi lain yang sangat kompleks. Pengaruh teknis perakiatan baterai juga mempengaruhi voltase dan kuat anus baterai. Pada 'baterai seng, seng diubah menjadi Zn2 di anoda. Pada baterai aluminium Al diubah menjadi A13'. Battery is electrochemical sel which products electrical energy. Zink-carbon battery products voltage 1,5 Volt. This battery uses zink as anoda and Mn02 as katoda. Zink has -0,76 Volt standard reduction potential. Replacement zink with aluminium which has -1,66 Volt standard reduction potential will product voltage 2,4 Volt. But according to this experiment battery has voltage 1,585 Volt. In this experiment, replacement zink with aluminium is order to know the utility aluminium as electroda. After that, it is measured voltage electrical current. Liquid identification battery is doing to know a reaction which occur in anoda. Aliminium produts lower voltage and electrical current than zink battery. This case can happen if anoda installation does not perfect. It can concluded that voltage and electrical current of battery just does not only determine by redokx reaction. But it also determine by another reaction which very complex. Organizing battery influences the voltage and electrical current of battery. In a zink battery, the zink will be changed into Zn2+ in the anode. In in aluminium battery, the Al will be changed into A13+. This document is Undip Institutional Repository Collection. The author(s) or copyrift owner(s) agree that UNDIP-IR may, without changing the content than one copy of thi , translate thi submission to any medium or format for the purpose of preservation. The author(s) or copyright owner(s) also agree that UNDIP-IR may keep more submission for purposes of security, back-up and preservation. ( http:lleprints.undip.ac.id)
Item Type: | Thesis (Undergraduate) |
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Subjects: | Q Science > QD Chemistry |
Divisions: | Faculty of Science and Mathematics > Department of Chemistry |
ID Code: | 30601 |
Deposited By: | Mr UPT Perpus 1 |
Deposited On: | 03 Nov 2011 09:54 |
Last Modified: | 03 Nov 2011 09:54 |
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