Term 3 Final Question Preview (ID: 36236)


This Is A Review For The 2017 3rd Term Final. TEACHERS: click here for quick copy question ID numbers.

If water usually boils at 100 C Why does it boil at a different temperature with salt added
a) Salt raises the boiling point
b) Concentration of solute doesn't change anything
c) Salt won't affect boiling point
d) Salt water can't boil

What is NaOH?
a) An Acid
b) A Neutral solution
c) A Base
d) A Werewolf

What si the molarity (Mol/L) when 2.34 moles of NaCl is dissolved in 500 mL
a) .00468
b) 1.17
c) 1170
d) 4.68

pH level for an acidic solution is?
a) pH 7
b) pH 7
c) pH = 7
d) pH 14

When the concentration of reactants is higher, the reaction rate is__________.
a) Faster
b) Slower
c) The Same
d) Huh

What's the equation to find Molarity?
a) Moles / Liters
b) Moles / Kilograms
c) Liters / Moles
d) Kilograms / Liters

Balance the chemical equation ___PCl5 + ___H2O →___HCl +___H3PO4
a) 1,4,1,5
b) 1,4,5,1
c) 1,2,3,4
d) 1,5,3,5

Nickel is added to a reaction mixture and the reaction speeds up. This is most likely because __________.
a) nickel is used to increase the temperature
b) nickel is a catalyst used to lower the activation energy
c) nickel is a catalyst used to make the reaction reversible
d) nickel is used to increase the amount of energy needed for the reactants to form products

Dynamic equilibrium is defined as:
a) A reaction where products can also react to re-form the reactants
b) No overall change in concentration taking place although forward and reverse reactions still occur.
c) All reactants being used up
d) A reaction that goes to completion, reactions where products will not be converted back into reactants.

What would happen if I were to perform the reaction below in a refrigerator? N2(g) + 3H2(g) ⇆ 2NH3(g) + energy
a) Equilibrium will shift to the left and create more products
b) Equilibrium will shift to the right and create more products.
c) Equilibrium will shift to the left and create more reactants.
d) Equilibrium will shift to the right and create more reactants.

If I wanted to dissolve sugar into solution at the fastest rate what conditions would I choose.
a) Large sugar chunks, cold water, no stirring
b) Granulated sugar, placed in warm water with little movement of water particles allowed
c) Powdered sugar in hot water being constantly stirred
d) Ask Superman to use his freezing breath on sugar put into a glass of water

If I wanted to reduce the colligative properties of water taken from The Great Salt Lake what would be an easy way to do it?
a) Microwave the water
b) Add a large amount of solute to the water
c) Add a small amount of solute to the water.
d) Pass the water through a filter to remove impurities

If I am involved in an industrial accident and spill Sodium Hydroxide (NaOH) upon my hand what should I do?
a) Add enough base to raise the pH to a neutral level
b) Add enough acid to raise the pH to a neutral level
c) Add enough base to lower the pH to a neutral level
d) Add enough acid to lower the pH to a neutral leve

What is the molar mass (molecular weight) for NaOH
a) 20 grams/mol
b) 17.01 grams/mol
c) 23 grams/mol
d) 40.00 grams/mol

What effect would increasing the pressure of a reaction that is at equilibrium have?
a) Cause more heat to be produced.
b) Increase frequency of collisions.
c) Decrease temperature of overall reaction.
d) Decrease frequency of collisions

If water usually boils at 100 C why does it boil at a different temperature with salt added?
a) Salt raises the boiling point
b) Salt won't affect boiling point
c) Concentration of solute doesn't change anything
d) Salt water can't boil

Ice cream was first discovered in ancient china, and is still a very popular dish today. While we may use more sophisticated machinery, we still frequently use the same chemical reaction of adding sodium chloride an ionic compound to ice. Why do we d
a) To flavor the ice cream
b) To lower the ice's melting point
c) To melt the ice more quickly
d) To make the cream float to the top

What type of reaction is CuCl2 + 4NH3 -- Cu(NH3)4Cl2
a) Combination (Synthesis)
b) Single Replacement (Single Displacement)
c) Combustion
d) Decomposition

The random molecular motion of a substance is greatest when the substance is
a) Condensed
b) a liquid
c) frozen
d) a gas

Using the Arrhenius definition, classify HNO3 as an acid, a base, or a salt.
a) Acid
b) Base
c) Salt
d) Blue

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