Which of the following is correct for pure liquid :

Options

A. Molality is independent of density of liquid.
B. Molarity depends on density of liquid.
C. Molarity = density `xx` molality (where density is in gm/lit)
D. All are correct

Answer

D

Explanation

(1) `m = ("moles of solute")/("mass of solvent in kg")`
Independent of density as no volume is present
(2) `M = ("moles of solute")/("volume of solution in Lt")`
For pure liquid solvent = solution
so, m depends on density
(3) `M = (n_("solute"))/((m_("sovent"))/(d)) = (n_("solute"))/(m_("solvent")) xx d = m xx d`
`"Molarity" = "Molality" xx d`