正所謂,再鋒利的刀也有生鏽的一日(請注意:只能用于鐵做的刀),又正所謂人/芒果定勝天,在兼職芒果學完化學之後發現,是有方法,令刀沒有那麽快生鏽。
aka Factors lowering rate of rusting!
1. presence of alkaline
- immerse your knife into alkaline is a good way
- alkaline solutions (e.g. sodium hydroxide solution) suppress rusting
rate of rusting decrease
2. lower temperature
-erm maybe put your knife in the fridge
- reaction (*of losing electrons to form Fe2+ (aq) ions ) proceeds slower at lower temperatures
3. attaching / connecting a more reactive metal on iron
- consider putting some magnesium on the knife
- magnesium is higher than iron in the reactivity series
- magnesium loses electrons more readily than iron to give Mg 2+(aq) ions
- this prevents iron from losing electrons to form Fe 2+(aq) ions
- formation of Fe 2+(aq) ions is prohibited
- rate of rusting decrease
4. reduce area of knife that is bent or sharp
- uh maybe consider keep a round knife and make it sharp everytime before using
- at bent or sharp area, iron loses electrons more readily to form Fe 2+(aq) ion
formation of Fe 2+ (aq) ion is speeded up
rate of rusting increase
so keep ur knife less sharp
5. connecting your knife to the negative terminal of the battery
- iron loses electron less readily to the negative terminal of the battery to form Fe 2+ (aq) ion
- formation of Fe 2+ (aq) ion is slowed down 197Please respect copyright.PENANAOMpPaeLLn8
- rate of rusting decrease
ns216.73.217.22da2


