The table shows 3 different substances and their properties at room temperature. Substance Color Odour Physical State P Yes No Solid Q No Yes Liquid R Yes Yes Gas Amy was given another substance S. S has a melting point of 35˚C and a boiling point of 90˚C. What is the physical state of S at : 1) Room temperature of 25 ˚C ? 2) at 70 ˚C 3) at 120 ˚C 4) at 45 ˚C
Answers
Explanation:
\bold{\mathrm{Fe}+\mathrm{CuSO}_{4} arrow \mathrm{FeSO}_{4}+\mathrm{Cu}}Fe+CuSO
4
arrowFeSO
4
+Cu is a single replacement or displacement reaction.
It is because, in this reaction, the highly reactive metal iron replaces the Copper in copper sulphate by giving up two electrons and gets oxidized and forms a new compound called ferrous sulphate. The copper present in the compound gets reduced by gaining two electrons and is released from it.
As a highly reactive metal (iron) replaces a low reactive metal (copper) in the given reaction it is inferred that \bold{\mathrm{Fe}+\mathrm{CuSO}_{4} arrow \mathrm{FeSO}_{4}+\mathrm{Cu}}Fe+CuSO
4
arrowFeSO
4
+Cu a single replacement or displacement reaction.
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