Project Chemistry A+
☁️ Chapter 1 ; Form 5
Tips!
wajib - BUAT OHEN YG SECOND LEVEL
option one
1) try untuk kenal dulu chapter/subtopic/diagram/kata kunci soalan
2) in this case, diagram tunjukkan abt the conversion of fe2+ to fe3+
3) in order to become Fe3+, iron must increase in oxidation number
4) according to ohen, increasing in oxidation number means undergo oxidation
5) Also according to ohen second level, negative terminal undergo oxidation
6)so in negative terminal..reaction occur is Fe2+ to Fe3+
the colour changes is green to brown
Option 2
3) ataupun..kita boleh je igt the oxidising agent yg empat tuu ( bromine water, chlorine water , acidified potassium manganate solution (VII) , acidified dichromate (VI) solution
4) dalam gambar pakai acidified potassium manganate (VII) solution so automatic la dia oxidising agent
5) INGATT oxidsing agent undergo reduction while reducing agent undergo oxidation
6) if satu side dah reduction, so reaction Fe2+ to Fe3+ lah undergo oxidation
7) kalau soalan tnya negative terminal…Negative terminal always undergo oxidation in VOLTAIC CELL JE TAUU!! (according to ohen second level)
8) so reaction in negative terminal is Fe2+ to Fe3+
9) colour changes is from green to brown
wajib - BUAT OHEN YG SECOND LEVEL
option one
1) try untuk kenal dulu chapter/subtopic/diagram/kata kunci soalan
2) in this case, diagram tunjukkan abt the conversion of fe2+ to fe3+
3) in order to become Fe3+, iron must increase in oxidation number
4) according to ohen, increasing in oxidation number means undergo oxidation
5) Also according to ohen second level, negative terminal undergo oxidation
6)so in negative terminal..reaction occur is Fe2+ to Fe3+
the colour changes is green to brown
Option 2
3) ataupun..kita boleh je igt the oxidising agent yg empat tuu ( bromine water, chlorine water , acidified potassium manganate solution (VII) , acidified dichromate (VI) solution
4) dalam gambar pakai acidified potassium manganate (VII) solution so automatic la dia oxidising agent
5) INGATT oxidsing agent undergo reduction while reducing agent undergo oxidation
6) if satu side dah reduction, so reaction Fe2+ to Fe3+ lah undergo oxidation
7) kalau soalan tnya negative terminal…Negative terminal always undergo oxidation in VOLTAIC CELL JE TAUU!! (according to ohen second level)
8) so reaction in negative terminal is Fe2+ to Fe3+
9) colour changes is from green to brown
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