Solutions Part 2 Test: Question Preview (ID: 18446)

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Which of the following is an electrolyte?
a) sodium chloride (table salt)
b) sugar
c) water
d) glass

A substance whose water solution does NOT conduct a current is a(n)
a) polar substance
b) nonelectrolyte
c) electrolytes
d) ionic substance

Molecules whose water solutions conduct current
a) require carbon to decompose in water
b) ionize in water.
c) do not dissolve in water.
d) can crystallize

Which of the following does NOT increase the rate of dissolving a solid in water?
a) raising the temperature
b) stirring
c) using larger pieces of solid
d) crushing the solid

Which of the following decreases the average speed of solvent molecules?
a) increasing the temperature
b) stirring the solution
c) adding more solvent
d) decreasing the temperature

Which of the following will dissolve most rapidly?
a) sugar cubes in cold water
b) sugar cubes in hot water
c) powdered sugar in cold water
d) powdered sugar in hot water

What is Henry’s Law?
a) The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution.
b) When volume and temperature are constant, gas pressure increases as the number of molecules increases.
c) The inverse relationship between volume and the pressure of a gas.
d) The direct relationship between the pressure of a gas and its temperature in Kelvin.

What is an example of Henry’s Law?
a) carbonated beverage (soda)
b) bottled water
c) filling up a tire
d) spray paint

Deep sea divers may experience a condition called what?
a) cramps
b) bends
c) blurry vision
d) migraines

Liquids and solids exhibit practically no change in solubility with changes in
a) volume
b) moles
c) pressure
d) temperature

An application of Henry’s Law is the administration of anesthetic
a) water
b) liquids
c) solids
d) gases

What are the three types of solutions for a solubility curve?
a) unsaturated, saturated, supersaturated
b) not full, full, really full
c) unconcentrated, concentrated, superconcentrated
d) emulsions, colloidals, solutions

What exactly does a solubility curve show?
a) The amount of H2O needed to dissolve something
b) How much solute has dissolved at 30oC
c) How concentrated a solution is
d) The maximum amount of a substance that can be dissolved in 100g H20 at a given temperature

Concentration is defined as
a) How much solute is dissolved in a given amount of solution
b) How much solution is dissolved in a given amount of solute
c) A substance that dissolves in water to give a solution that conducts electric current
d) A substance that dissolves in water to give a solution that does not conduct an electric current

The concentration of a solution is its
a) molar mass
b) volume
c) molarity
d) molar volume

The _______ moles you have per liter means the ______ _________ the solution will be. The ________ moles you have per liter means the _______ _________ the solution will be.
a) more, less concentrated; more less dilute
b) more, more concentrated; less, more dilute
c) less, more concentrated; more, more dilute
d) less, more dilute; less, more concentrated

Calculate the Molarity of a solution that has 2.3 moles dissolved in 4.6 liters total
a) 2.0 M
b) 10.6 M
c) 0.5 M
d) 6.9 M

How many moles of CuSO4 ⋅ 5H2O are in 0.8 L of a 0.6 M solution?
a) 1.3 moles
b) 1.4 moles
c) 0.48 moles
d) 0.20 moles

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