  The velocity (v) and attenuation constant (a) for ultrasonic waves of
frequencies 1MHz and 2MHz propagating through aqueous sodium chloride solution
have been measured over the concentration (c) region 0-5.3 mol.L-1 at room
temperature (250 C). The velocity (v) shows an overall increase with the
increase of c indicating comparatively stronger bonding among the ions and
water molecules prevailing in the solution. The attenuation constant, besides
showing an overall increase with c, shows significantly high values at some
concentrations. Attempt has been made to understand the behaviour from existing
theoretical background.
