of solutions that depend on th (collective) properties. You will learn As the co
ID: 1028144 • Letter: O
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of solutions that depend on th (collective) properties. You will learn As the concentration of solute increases freezing and boiling points. In contrast Solutions and Vaper Pressuute as of solute concentradion (but not on the identity) of solute are called colligative Noe the concentration of a solute affects four properties of a solution vapor pressure · bolling point increases · freezing point decreases pressure increases will learn why they happen. We will We vwil treat these effects both qualtatively and quantitatively and you discuss some important applications of these effects. Volatile vs. non-volatile components of a solution each colligative property we will usually consider the case of a solvent (a non-volatile solute dissolved in a volatile typical example is any ionic compound dissolved in water) A volatile substance is one with a measurable vapor pressure at moderate temperatures. In general, volatility increases as intermolecular forces decrease. Vapor pressure is the pressure inside a closed container when a liquid is in equilibrium with its own gas phase the rate of evaporation is equal to the rate of condensation. When a non-volatile solute is dissolved solvent the vapor pressure of the solvent is reduced. As the concentration of the solute increases, the vapor in a volatile Why does the addition of a solute reduce the vapor pressure of a volatile solvent? Entropy is the keyt Entropy is processes occurring in a sealed container at the same pressure of the solvent decreases measure of disorder,randomness (chaos) of a system, and, one of the two driving forces for any process is an increase in entropy. Consider the following two temperature Process 1: Evaporation of pure water Process 2: Evaporation of water from a solution H:0(solution)+:0(g) Clearly the entropy increases in both processes (a gas has more entropy than that substance as a liquid o olution).Explanation / Answer
Ans 19 :
Entropy is the degree of randomness or disorderness of the system.
Since both the processes have H2O (g) as the product , the only difference lies in their reactants.
The first process has liquid water , the other one has solution. Liquid water must have higher entropy that the solution , so the increase in entropy will be greater in the second process.
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