Question

What is rusting? Why rusting is considered as a special case of corrosion?​

Answer 1

Answer:

Explanation:

Corrosion is the degradation of any metallic surface due to chemical reaction through the agents of oxygen, water vapours, hydrogen. Rusting is a special case of corrosion. Rusting occurs only on iron surfaces when it is exposed to humidity for a long period.

Answer 2

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ᴡʜᴀᴛ ɪs ᴛʜᴇ ʀᴜsᴛɪɴɢ ᴏғ ɪʀᴏɴ? ᴡʜᴀᴛ ᴀʀᴇ ᴛʜᴇ ᴛᴡᴏ ᴇssᴇɴᴛɪᴀʟ ᴄᴏɴᴅɪᴛɪᴏɴs ᴏғ ʀᴜsᴛɪɴɢ?

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ᴛʜᴇ ᴘʀᴏᴄᴇss ᴏғ ғᴏʀᴍᴀᴛɪᴏɴ ᴏғ ᴀ ʀᴇᴅᴅɪsʜ ʙʀᴏᴡɴ ғʟᴀᴋʏ sᴜʙsᴛᴀɴᴄᴇ ᴏɴ ᴛʜᴇ sᴜʀғᴀᴄᴇ ᴏғ ɪʀᴏɴ ᴏʙᴊᴇᴄᴛs ɪɴ ᴛʜᴇ ᴘʀᴇsᴇɴᴄᴇ ᴏғ ᴍᴏɪsᴛᴜʀᴇ ᴀɴᴅ ᴀɪʀ ɪs ᴄᴀʟʟᴇᴅ ʀᴜsᴛɪɴɢ. ᴛʜᴇ ʀᴇᴅᴅɪsʜ ʙʀᴏᴡɴ ᴅᴇᴘᴏsɪᴛ ғᴏʀᴍᴇᴅ ᴏɴ ᴛʜᴇ ɪʀᴏɴ ᴏʙᴊᴇᴄᴛs ɪs ᴋɴᴏᴡɴ ᴀs ʀᴜsᴛ.

ᴛʜᴇ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ ᴏғ ʀᴜsᴛɪɴɢ ᴄᴀɴ ʙᴇ ʀᴇᴘʀᴇsᴇɴᴛᴇᴅ ʙʏ ᴛʜᴇ ғᴏʟʟᴏᴡɪɴɢ ᴄʜᴇᴍɪᴄᴀʟ ᴇǫᴜᴀᴛɪᴏɴ :-

$\sf iron(FE) + oxygen(0_{2}+water*(H_{20}\to rust (iron)$

ᴛᴡᴏ ᴇssᴇɴᴛɪᴀʟ ғᴇᴀᴛᴜʀᴇs ᴏғ ʀᴜsᴛɪɴɢ ᴀʀᴇ :

➡ᴛʜᴇ sʟᴏᴡ ᴇᴀᴛɪɴɢ ᴜᴘ ᴏғ ᴍᴇᴛᴀʟs ʟᴀʏᴇʀ ʙʏ ʟᴀʏᴇʀ ᴅᴜᴇ ᴛᴏ ᴛʜᴇ ʀᴇᴀᴄᴛɪᴏɴ ᴡɪᴛʜ ᴍᴏɪsᴛᴜʀᴇ ᴘʀᴇsᴇɴᴛ ɪɴ ᴀɪʀ ɪs ᴋɴᴏᴡɴ ᴀs ᴄᴏʀʀᴏsɪᴏɴ.

➡ᴛʜᴇ ᴄᴏɴᴅɪᴛɪᴏɴ ʀᴇǫᴜɪʀᴇᴅ ғᴏʀ ʀᴜsᴛɪɴɢ ᴏғ ɪʀᴏɴ ɪs ᴘʀᴇsᴇɴᴄᴇ ᴏғ ᴍᴏɪsᴛᴜʀᴇ & ɪʀᴏɴ sʜᴏᴜʟᴅ ʙᴇ ᴄᴏᴀᴛɪɴɢ ғʀᴇᴇ.

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