Question

xii) In case of one component systems, in any area system is
(a) univariant
10) bivariant​

Answer 1

Explanation:

A phase diagram consists of areas, curves or lines and points. The least number of phases possible in any system is one. So, according to the phase rule equation, a one-component system should have a maximum of two degrees of freedom

Answer 2

Answer:

Explanation:

Phase rule:

The phase rule is an overarching principle in thermodynamics that governs "$PVT$" systems, or systems whose states are entirely characterized by the variables pressure ($p$), volume ($V$), and temperature ($T$), when they are in thermodynamic equilibrium. If $C$ is the number of components, $P$ is the number of phases, and$F$ is the number of degrees of freedom, then

$F=C-P+2.$

American physicist Josiah Willard Gibbs developed it in his seminal work On the Equilibrium of Heterogeneous Substances, which was published in sections between 1875 and 1878.  The rule presupposes that the components don't interact.

The total number of independently varying intense variables—the most thermodynamic characteristics, like temperature or pressure, that may be changed simultaneously and arbitrarily without affecting one another—is known as the number of degrees of freedom. One pure chemical system serves as an illustration of a one-component system, while two-component systems, like mixes of water and ethanol, have two chemically distinct components. Solids, liquids, and gases are common phases.

Areas, curves or lines, and points are the basic elements of a phase diagram. In any system, one phases are the absolute minimum. Therefore, a one-component system should have no more than two degrees of freedom, according to the phase rule equation.

Phase rule diagram definition:

The numerous phases of a substance or mixture of substances that coexist in thermodynamic equilibrium and go through phase changes under varied operating circumstances, such as temperature, pressure, or volume, are graphically represented in a phase diagram.

Univariant definition:

One pure chemical system serves as an illustration of a one-component system, while two-component systems, like mixes of water and ethanol, have two chemically distinct components. Solids, liquids, and gases are common phases.

In case of one component systems, in any area system is Univariant.

#SPJ2