In a binary system, what is the maximum number of phases that can co-exist under the equilibrium conditions? one a b two three c d four

D) Four

Explanation:

Using phase rule,

F = C - P + 2

where,

C is the number of components in the system. For example, for binary systems, C=2

P indicates the number of phase of the component. It is defined as homogeneous chemical composition of the substance. Thus, two immiscible liquids with definite boundaries form 2 phases.

F is the number of variables. For example , variables like temperature, pressure, mole fraction, etc.

Thus, using this

C =2

For P to be maximum, F has to be 0. This is the condition when all the variable of the binary system is known.

So,

F = C - P + 2

0 = 2 - P + 2

P = 4

Explanation:

1 Evaporation is the phase change of a liquid to a gas. There are three very important requirements for evaporation to take place, 1) available energy, 2) available water, and 3) a vertical moisture gradient. Approximately 600 calories of heat must be added to a gram of water for it to evaporate into the air.

2. Evaporation is the process of a substance in a liquid state changing to a gaseous state due to an increase in temperature and/or pressure. It is a fundamental part of the water cycle and is constantly occurring throughout nature.

3.Water evaporates faster if the temperature is higher, the air is dry, and if there's wind. The same is true outside in the natural environment. Evaporation rates are generally higher in hot, dry and windy climates.

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