Solutions - 12
Terms in this set (30)
At a given temperature, the solubility of a gas in a liquid is directly proportional to the pressure of the gas above the liquid.
The solvation process in sugar molecules takes place due to hydrogen bonding.
Which of the following pairs of factors affects the solubility of a particular substance?
temperature and pressure
Which of the following occurs as temperature increases?
The solubility of a gas in a liquid is ____.
directly proportional to the pressure of the gas above the liquid
To increase the solubility of a gas at constant temperature from 1.20 g/L, at 1.4 atm, to 2.3 g/L, the pressure would have to be increased to ____.
The process of surrounding solute particles with solvent particles to form a solution is called __________________.
If the solubility of a particular solute is 10g/100g H2O at 20C, which of the following solution concentrations would represent a supersaturated aqueous solution of that solute?
11g/100g H2O at 20C
A __________ is a mixture of materials composed of a fluid called the _________, and an additional material called the ________.
Solution, solvent, solute
Adding solvent or removing solute from a soltuion is called __________, and a solution is said to be _______________ if it has more solute.
Which of the following is an electrolyte?
Which is a molecular substance whose water solution conducts electricity?
A dissolved solute that does not form ions is
Which of the following is a molecular compound that ionizes in water?
How are electrical currents conducted through a solution?
All of the following electrolytes may be present in sports drinks except
Which one of the following is an example of a colligative property?
Changing boiling point
A substance whose water solution conducts a current is a(n) _____________.
A dissolved solute that only partially dissociates to form few ions is a(n) _____________.
Which of the following are characteristics of micelles?
Hydrophilic portions are on the outside of the globule
The non-polar or hydrophobic portions are inside the ball-shaped little particle
Can cross the semipermeable membrane
The barrier with tiny pores that allow some particles to pass through but not others
A colligative property of solutions
Why is boiling-point elevation a colligative property?
It is directly proportional to the concentration of particles in a solution.
depress the freezing point and elevate the boiling point.
Compared with a 0.01 M sugar solution, a 0.01 M MgCl2 solution has
about three times the freezing-point depression.
When solute particles are added to a pure solvent in a closed container at a constant temperature and pressure, the vapor pressure _________.
A solution has a lower freezing point than a pure solvent.
What are colligative properties of solutions?
A solution of a solid non-volatile solute in a liquid solvent shows a decrease in vapor pressure above the solution as the amount of solute is increased
The solution shows an increase in osmotic pressure between it and a reference solution as the amount of solute is increased
The solution shows an increase in boiling point as the amount of solute is increased
What happens to the vapor pressure as more solute, such as sugar, is added to a solution?
The vapor pressure decreases
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