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Solutions Chapter 15
Test Description: Solutions, molarity, molality, mole fractions
Instructions: Answer all questions to get your test result.
1) All solutions have the following properties except that the
A
final physical state of a solution is liquid.
B
solution particles do not spearate or settle out.
C
particles in a solution are evenly distributed.
D
dissolved particles are very small.
2) Which of the following statements applies to the dissolved solute particles in a solution?
A
There will always be less solute than solvent.
B
They will settle out if left standing.
C
They will be in the same phase as the solvent.
D
They can be seen with the unaided eye.
3) Which two substances are miscible in all proportions?
A
ethanol (alcohol) and water
B
water and mineral oil
C
water and gasoline
D
sugar and water
4) An alloy is an example of a
A
solid mixture but not a solution.
B
liquid solution.
C
solid solution.
D
gaseous solution.
5) All of the following are solutions except
A
ocean water
B
antifreeze.
C
a concrete building block.
D
a sterling silver bracelet.
6) Solutions with water as the solvent are called
A
aqueous solutions.
B
liquids.
C
electrolytic.
D
miscible solutions.
7) Molarity is expressed as
A
moles of solvent/liters of solute.
B
moles of solute/liters of solvent.
C
moles of solute/liters of solution.
D
moles of solute/moles of solvent.
8) Solution concentration expressed as moles of solute/kilograms of solvent is known as
A
mole fraction.
B
molality.
C
millimolarity.
D
molarity.
9) One way to measure solution concentration is by mole fraction, which is expressed as
A
moles of solute A/moles of solute B.
B
solute percent of total moles.
C
moles of component/total moles of solution.
D
moles of solute/moles of solvent.
10) To express a solution concentration in molality, you need to know all of th following except
A
total volume of solution.
B
chemical formula of solute.
C
mass of solvent.
D
mass of solute.
*select an answer for all questions
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