B: saturated
C: supersaturated
D: oversaturated
Answer: The correct answer is Option D.
Explanation:
From the given options:
Option A: Unsaturated solution is defined as the solution in which more solute particles can be dissolved in the solvent.
Option B: Saturated solution is defined as the solution in which no more solute particles can be dissolved in the solvent.
Option C: Supersaturated solution is defined as the solution in which more amount of solute particles is present than the solvent particles.
Option D: Oversaturated is defined as the to saturate the solution excessively or to provide with more amount of substance for saturation.
Hence, the correct answer is Option D.
True
False
0.75 mol sucrose dissolved in 1000 g water
1.0 mol ethylene glycol dissolved in 1000 g water
0.50 mol CaCl2 dissolved in 1000 g water
0.25 mol NaCl dissolved in 1000 g water
b. buffer
c. acid
d. catalyst
c is wrong it’s physical weathering
(2) ethanol (4) water
Answer:
1) Ethanol
Explanation:
If we will have interactions we will need more energy to break them in order to go from liquid to gas. If we need more energy, therefore, the temperature will be higher.
In this case, we can discard the propanone because this molecule don't have the ability to form hydrogen bonds. (Let's remember that to have hydrogen bonds we need to have a hydrogen bond to a heteroatom, O, N, P or S).
Then we have to analyze the hydrogen bonds formed in the other molecules. For ethanol, we will have only 1 hydrogen bond. For water and ethanoic acid, we will have 2 hydrogen bonds, therefore, we can discard the ethanol.
For ethanoic acid, we have 2 intramolecular hydrogen bonds. For water we have 2 intermolecular hydrogen bonds, therefore, the strongest interaction will be in the ethanoic acid.
The closer boiling point to the 75ºC is the ethanol (boiling point of 78.8 ºC) therefore these molecules would have enough energy to break the hydrogen bonds and to past from liquid to gas.
Among Ethanoic Acid, Ethanol, Propanone, and Water, Propanone has the highest vapor pressure at 75°C because it has the weakest intermolecular forces, making it more likely to vaporize.
The vapor pressure of a substance is determined by how easily particles can escape from the liquid phase and become a gas. In general, the higher the temperature, the higher the vapor pressure.
The four liquids provided in your question are Ethanoic Acid, Ethanol, Propanone, and Water. At 75°C, Propanone is known to have the highest vapor pressure among the listed substances. This is because Propanone, also known as acetone, has weaker intermolecular forces and thus more readily vaporizes.
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