Question

An archeologist found a gold coin,silver bracelet, and an iron sward while
digging at a site.On washing them carefully he found that while the gold coin
shone brightly, the iron sward had a reddish brown colour and was chipped
from the sides and the silver bracelet had turned black. Write the chemical
name of the reddish brown substance found on iron sward.

Answer 1

Answer:

like a substance is rusting means it is known as rusting rust in simple form please mark me brainliest

Answer 2

• The chemical  name of the reddish brown substance found on the iron sword is RUST.
• The rust has the chemical formula $Fe_{2}O_{3}.xH_{2}O$ , hydrated iron (III) oxide.
• In the presence of water, moisture, or air, the reaction of iron with oxygen leads to the formation of rust.
• No physical process is there to obtain back the iron from the rust.
• The rusting of the iron has the following reaction:
• $4Fe + 3O_{2} + 6H_{2} O\rightarrow 4Fe(OH)_{3}$
• The rust is a reddish and brown flaky coat present on the iron.
• Rusting causes loads of damage.
• It can be corrected by methods like painting,  galvanization, and the application of grease.