sarcrficial protection(urgent)

发布网友发布时间：2023-07-14 06:05

共1个回答

热心网友时间：2024-01-09 02:48

更新1:

2. My book states that putting iron nail into sodium chloride can speeds up rusting because it increases the electrical conctivity
but what is the relation beeen this and rusting? 3. Why a sharply pointed region of iron nail does rust most readily?

更新2:

Do=id you mean that originally both metals corrode
but since iron is more reactive
besides its own rusting
it also loses electrons to the less reactive metal
thus speesing up rusting?

1. U Can treat it like this: originally
only iron carries out rusting however
with a less reactive metal
iron loses electrons more preferably
so it loses the electrons for the less reactive metal also. therefore
rust faster. 2. when electrical conctivity increases
the ions and electrons flow faster. as rusting is a process in which iron loses electrons
rusting occurs faster. 3. a sharp area has a larger area to volume ratio
so occurs rusting more easily 2010-09-19 00:30:57 补充： yes the less reactive metal is being oxidized in room conditions also
参考: me
me