Question

when common salt to added in water will there be any change in volume give reason

Answer 1

No there will no change in volume because the ions of common salt will
Will occupy the vacant space between water molecules
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Answer 2

When common salt is added to water, apparently there will no change in the volume because common salt dissolves completely in water.

EXPLANATION:

However, if we consider the restructured water molecules, there is a slight change in the volume of water. The volume will shrink or there will be slight loss of volume. This is because the restructured water molecules would need to accommodate for the displacement and shrink because of the electrostatic force.