Can somebody help me solve these problem???

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[Gary11]

i would like to ask which electrochemical series to be used because there r 2 type of electrochemical series in form 4 and 5 with the hydrogen and carbon 1. The position of hydrogen are different in each series.

Besides, can i know which chapter will exactly come out in the SPM so that i can totally focusing on it!!!

Any comment is greatly appreciated..

[Ting Tin Chung]

i would like to ask which electrochemical series to be used because there r 2 type of electrochemical serie in form 4 and 5 with the hydrogen and carbon 1. The position of hydrogen are different in each series.

Hi, at first, you have to remember that we only have 1 electrochemical series. The one that you mentioned in form 5 actually is reactivity series. Both series are totally different. If you look carefully, they are only ions in the electrochemical series and atom of metals in the reactivity series. Normally electrochemical serie is used for electrolysis processes or for voltaic cells. Reactivity series is used for displacement processes, extraction of metal or even though the reactivity of metal with oxygen or hydrogen gas.

Besides, can i know which chapter will exactly come out in the SPM so that i can totally focusing on it!!!

Any comment is greatly appreciated..

My suggestion is, don't ever focusing on certain topic. It's really doesn't work.... if you have gone through the analysis of past year question, you will find that almost all topic will be cover in the exam...... Try to download the JUJ Pahang 2008 in this portal. If you are able to answer all the question in that paper, its mean you have done a good preparation for your chemistry....

Always remember, belive to your self and......one more thing is : Chemistry is very easy

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