Which of the following statements are correct?
Which of the following statements are correct?
The density of water increases when heated from 
to 
due to the change in the structure of the cluster of water molecules
Above 
the thermal agitation of water molecules increases. Therefore, intermolecular distance increases and water starts expanding.
The density of water increases from 
to a maximum at 
because the entropy of the system increases.
The correct options are
A The crystal lattice of ice is mostly formed by covalent as well as hydrogen bonds.
B The density of water increases when heated from 
to 
due to the change in the structure of the cluster of water molecules
C Above 
the thermal agitation of water molecules increases. Therefore, intermolecular distance increases and water starts expanding.
D The density of water increases from 
to a maximum at 
because the entropy of the system increases.
Ice is formed by ordered arrangement of H2O molecules. H is bonded to O by covalent bond.
Each water molecule bonds to 4 other H2O molecules via H-bonding. Thus, option A
Because of rigid packing of H2O molecules in ice, Oo C is less denser than water.
Once, it is broken by supply of heat, water molecules come closer to each other and density increases till 4o C.
Beyond 4o C, because of higher kinetic energy provided by heat, water molecules move away from each other. Thus, density decreases.
A
The crystal lattice of ice is mostly formed by covalent as well as hydrogen bonds.
B
The density of water increases when heated from to due to the change in the structure of the cluster of water molecules
C
Above the thermal agitation of water molecules increases. Therefore, intermolecular distance increases and water starts expanding.
D
The density of water increases from to a maximum at because the entropy of the system increases.
Ice is formed by ordered arrangement of H2O molecules. H is bonded to O by covalent bond.
Each water molecule bonds to 4 other H2O molecules via H-bonding. Thus, option A
Because of rigid packing of H2O molecules in ice, Oo C is less denser than water.
Once, it is broken by supply of heat, water molecules come closer to each other and density increases till 4o C.
Beyond 4o C, because of higher kinetic energy provided by heat, water molecules move away from each other. Thus, density decreases.
