Solutions Part 2 Test2 Question Preview (ID: 18453)


Solutions Part 2 Test2. TEACHERS: click here for quick copy question ID numbers.

What type of molecules are usually electrolytes?
a) covalent molecules
b) small molecules
c) large molecules
d) ionic molecules

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

What is the definition of a nonelectrolyte?
a) A substance whose water solution does NOT conduct a current
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

Which of the following is an example of a nonelectrolyte?
a) chloric acid
b) nitric acid
c) salt
d) sucrose

What are the three main ways of increasing the rate of dissolving?
a) unconcentrated, concentrated, superconcentrated
b) increase temperature, agitation, increase surface area
c) emulsions, colloidals, solutions
d) not full, full, really full

How can the speed of molecules be increased?
a) increasing the temperature
b) stirring the solution
c) adding more solvent
d) decreasing the temperature

What is Henrys 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.

Which of the following is an example of Henrys Law?
a) carbonated beverage (soda)
b) bottled water
c) filling up a tire
d) spray paint

What condition do deep sea divers suffer from if they try to surface too quickly
a) cramps
b) bends
c) blurry vision
d) migraines

Which of the following is a practical application of Henrys Law?
a) solids
b) liquids
c) anesthesia
d) gases

Solubility curves can show us information about what three types of solutions?
a) unsaturated, saturated, supersaturated
b) not full, full, really full
c) unconcentrated, concentrated, superconcentrated
d) emulsions, colloidals, solutions

What 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

What is the definition of concentration?
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

What is the definition of Molarity?
a) How much solute is dissolved in a given amount of solution
b) The concentration of a solution
c) A substance that dissolves in water to give a solution that conducts electric current
d) How much solution is dissolved in a given amount of solute

Describe concetrated and dilute in terms of moles and liters.
a) concentrated: more moles you have per liter; dilute: less moles per liter
b) concentrated: less moles you have per liter; dilute: more moles per liter
c) concentrated: less moles you have per milliliter; dilute: more moles per milliliter
d) concetrated; more moles you have per milliliter; dilute: less moles per milliliter

What is the molarity of a 0.30 L solution containing 0.20 moles of NaCl? If the molarity of that solution were 10 M, how many moles of NaCl would be present?
a) 0.5 M; 1 mole
b) 1 M; 2 moles
c) 1.7 M; 3 moles
d) 3.6 M; 5 moles

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