Electrochemistry

SPM Chemistry Form 4 Notes – Electrochemistry (Part 10 – Final)

5 July 2011

Most of the time, students learn stuffs in SPM Chemistry thinking that it is just for exams and whatever they learn will have no practical application in real life. That perception is wrong, as everything you learn is either building blocks to understand something more complex or it already has practical applications which was neglected [...]

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SPM Chemistry Form 4 Notes – Electrochemistry (Part 9)

4 July 2011

Electrochemical series for SPM Chemistry is simply a collection of the standard electrode potential values being ordered in tables. Sometimes the volts as compared to the baseline is given. Here, the value of standard hydrogen electrode is used as the baseline and is set at 0. So, this Part 9 in the series of note [...]

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SPM Chemistry Form 4 Notes – Electrochemistry (Part 8 )

2 July 2011

Half-equations are components that make up an overall reaction equation. Two half-equations (usually written as empirical equations) can be written as a pair in which overall reaction equation is form (must be balanced according to electron charge). The two that can form a pair must each be an oxidation and reduction half-reactions. Usually students taking [...]

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SPM Chemistry Form 4 Notes – Electrochemistry (Part 7)

28 June 2011

The two ‘cells’ that Berry Readers will learn during the course of SPM Chemistry are the voltaic cell/galvanic cell and the Danielle cell. The first is an electrochemical cell which produces electrical energy from chemical reactions occuring in the cell which consists of two different metal connected by a salt bridge (alternatively, half-cells separated by [...]

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SPM Chemistry Form 4 Notes – Electrochemistry (Part 6)

26 June 2011

Industrial uses of electrolysis are very important to produce many raw materials and feedstock for generating electricity. However, most Berry Readers might not even realise the magnitude of the electrolysis-based industry and the economical impact if electrolysis is not used. Among example of large-scale industrial uses of electrolysis include the production of aluminium (Hall-Heroult process), [...]

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SPM Chemistry Form 4 Notes – Electrochemistry (Part 5)

24 June 2011

One important factor governing the process of electrolysis is the types of electrodes used. This Part 5 of Berry Berry Easy notes for SPM Form 4 Chemistry on Electrochemistry is a further add-on to the two previous factors affecting electrolysis. The first two being the positions of ions in the electrochemical series and effects of [...]

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SPM Chemistry Form 4 Notes – Electrochemistry (Part 4)

23 June 2011

This Part 4 of Berry Berry Easy notes for SPM Form 4 Chemistry on Electrochemistry is a continuation of Part 3 which was on the electrolysis of aqueous solutions. In the previous post, the focus was on the positions of ions in the electrochemical series. This time is is on the effects of concentration of [...]

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SPM Chemistry Form 4 Notes – Electrochemistry (Part 3)

21 June 2011

The underlying principle of electrolysis requires ions movement. As such, electrolysis will not work when an object is solid as there will not be any movement of ions, hence electricity cannot flow. In the previous part, the ions are allowed to move by making molten compound of the electrolyte (by melting it). In the next [...]

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SPM Chemistry Form 4 Notes – Electrochemistry (Part 2)

19 June 2011

Electrolysis is a very important process in chemistry which has not only academic importance but also industrial applications. Without going to far into that, electrolysis is simply a method of utilising electric current (direct current) to force a chemical reaction which would not have happened normally (non-spontaneous). This is one of the most asked question [...]

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SPM Chemistry Form 4 Notes – Electrochemistry (Part 1)

18 June 2011

The three basic components to learn electrochemistry for SPM Form 4 Chemistry students consist of electrolyte, non-electrolyte and also conductors. While it is clear to students the difference between an electrolyte and non-electrolyte, students typically confuse electrolyte with conductors. So this introductory post, Part 1 on SPM Form 4 Chemsitry series of notes on Electrochemistry by [...]

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