In: Physics
In a two-component phase diagram [temperature (y) vs. composition (x)] the direction of the tie lines must be determined experimentally.
Group of answer choices
True.
False, they can be inferred from the Lever Rule.
False, they are always horizontal.
False, they can be inferred from the lever rule.
The position of the point at each end of the tie line, at the
boundary of the two-phase area, gives the value of the composition
variable of one of the phases and also the
physical state of this phase: either the state of an adjacent
one-phase area, or the state of a phase of fixed composition when
the boundary is a vertical line. Thus, a
boundary that separates a two-phase area for phases
and
from a one-phase area for phase
is a curve that describes the composition of phase
as a function of T or P when it is in equilibrium with phase
. The curve is called a solidus, liquidus, or vaporus depending on
whether phase ’ is a solid, liquid, or gas.