A semiempirical expression about isothermal bulk modulus, BT, for simple organic liquids is obtained on the supposition that a cluster made of liquid molecules vibrates like a hard sphere in the free space which surrounds it and the effects of tempera...
A semiempirical expression about isothermal bulk modulus, BT, for simple organic liquids is obtained on the supposition that a cluster made of liquid molecules vibrates like a hard sphere in the free space which surrounds it and the effects of temperature and pressure on the occupied volume of simple organic liquids are negligible.
The isothermal bulk modulus, B_γ - B_0 [ 1 + B₁(T) P + B₂(T) P²], is integrated to give an equation of state, which is given by
<원문참조>
where B_0 is bulk modulus at P=0, b₁=[B₁(T)+<원문참조>/2, b₂=[B₁(T)-<원문참조>/2, B₁(T) - [2G_γ(0)+5/3]/ B_0, B₂(T) - [Gγ²-(0) - G_γ(0) - 1/9]/B_O², G_γ(0) is isothermal Gru¨neisen parameter at P = 0.
The parameters of the equation of state arc determined by fitting this equation to the reported data about specific volume for n-nonane, 3, 3-diethyl pentane, 4, 4-dipropylheptane and 5, 5-dibuylnonane.