Equilibrium
When considering free energy changes for salts dissolving in water, what trend is observed for ionization energies within a group?
They decrease down the group.
They fluctuate unpredictably down the group.
They remain constant down the group.
They increase down the group.
If the dissolution of a salt in water is endothermic and leads to an increase in disorder, what can be inferred about the sign of ∆G at high temperatures?
It equals zero
It does not change
It is likely negative
It is likely positive
Dissolution always leads to which of the following?
Increase in ΔH
Decrease in ΔS
Decrease in ΔH
Increase in ΔS
When a substance dissolves in water, what factor primarily determines whether the dissolution process is endothermic or exothermic?
The phase change from solid to liquid during dissolution.
The relative magnitudes of solute-solvent interactions compared to solute-solute and solvent-solvent interactions.
The increase in temperature as a result of dissolution.
The decrease in volume when a substance dissolves.
Which factor does not affect solubility?
Gravity
Pressure for gases only
Temperature
What property generally increases across a period from left to right and influences dissolution processes?
Atomic size.
Electronegativity.
Metallic character.
Shielding effect.
To determine how intermolecular forces affect dissolution energetics, what hypothesis would best guide experimentation comparing polar and nonpolar solvents interacting with various soluble substances?
Can increasing molecular mass predictably impact boiling points across a homologous series regardless of dipole-dipole interactions?
How do shielding effects from inner electron shells correlate with reactivity trends down alkali metal groups submerged in water?
Do variations in solvent viscosity significantly alter rates of diffusion for ions within those solutions at identical temperatures?
Will soluble substances exhibiting strong intermolecular forces dissolve with greater or lesser free energy changes when compared across polar versus nonpolar solvents?

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What advanced inquiry would explore mixed-ion effect impacts on entropy-driven dissolution processes using sparingly soluble electrolytes at equilibrium states?
Does altering substrate concentration proportionately modify Michaelis-Menten enzyme kinetics curves for catalyzed biochemical conversions?
How might variations in atmospheric humidity levels impact hygroscopic substance mass over time due to moisture absorption?
What role does initial reactant molarity play in affecting activation energies required to initiate redox reactions?
How does introducing additional ions sharing common components (cations or anions) with sparingly soluble electrolytes influence system entropy and shift equilibria?
Which equation correctly relates Gibbs free energy to enthalpy and entropy changes for dissolution at constant temperature?
ΔG = T(ΔH - ΔS)
ΔG = (ΔH/T) + ΔS
ΔG = ΔH - TΔS
ΔG = ΔH + TΔS
Consider a reaction X + Y ⇌ XY. How can the entropy change from the particles be described?
Entropy decreased because there are less molecules which means less "possible arrangements".
Entropy increased because the reaction caused some measurable disorder in the universe.
Entropy decreased because there are less molecules which means more "possible arrangements".
Entropy increased because the molecule grew bigger.