Ranking the compounds based on their rate of hydration ( slowest to fastest ) ; 5 < 3 < 4 < 1 < 2.
( butan-2-one < propanal < 3-methylbutan-2-one < formaldehyde < 3,3 dimethyIbutan-2-one )
The rate of hydration is the rate at which the chemical components contained in cement forms a chemical bond with water molecules, when cement is mixed up with liquid water. The bonding leads to the formation of hydrates.
Hydration is the process that causes the hardening of concrete ( mixture of cement, sand/gravel and water ).
Hence we can conclude that Ranking the compounds based on their rate of hydration ( slowest to fastest ) ; 5 < 3 < 4 < 1 < 2
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