Term 3 Midterm Question Preview (ID: 35543)
This Is A Review For Stoiciometry, Acid Base Chemistry And Molar Masses.
TEACHERS: click here for quick copy question ID numbers.
what would be an appropriate method to determine if a solution is an acid, or a base?
a) Taste it
b) Use a pH strip.
c) Apply an electrical current.
d) Google it.
An Arrhenius acid is a compound that dissociates in aqueous solution to form ____________ ions.
a) Hydroxide OH-
b) Hydgrogen H+
c) Chlorine Cl-
d) Sodium+
If universal indicator is added to an acidic solution what color will the solution change to?
a) Green
b) Black
c) Pink
d) Blue
If Carbonic acid (H2CO3) were put into water what electrolytes would be formed?
a) Hydrogen and Carbonate
b) Hydrogen, Oxygen, and Carbon
c) Han Solo and Carbonite ions
d) Sodium and Chlorine ions
Using the Arrhenius definition, classify H3PO4 as an acid, a base, or a salt.
a) Acid
b) Salt
c) Base
d) 42?
When you neutralize an arrhenius acid with an arrhenius base what will always be produced?
a) Water
b) Kool-aid
c) Ammonia
d) Heat
If I have a solution with a concentration of 0.000001 (1x10-6) grams of H+ per liter it is
a) An Acid
b) Neutral
c) A Base
d) Super
If I react 2 moles of Sodium (Na) with 1 mole of Chlorine gas (Cl2) what will my products weigh
a) 23 grams
b) 128 grams
c) 35 grams
d) 116 gram
What would be a good way to test for a compounds acidity
a) Litmus paper
b) Taste it
c) Pay a nerd to do it
d) Guess
Write the chemical equation for the Covalent compound Nitrogen dioxide
a) NO
b) N2O
c) NO2
d) NCO
Balance the Equation:____ C3H8 + ____ O2 ⇒ ____ CO2 + ____ H2O
a) 1, 2, 3, 4
b) 1, 4, 3, 4
c) 4, 3, 2, 5
d) 1, 5, 3, 4
What is the definition for a limiting reactant
a) a reactant that is used up completely in reaction
b) chemical compound formed when an acid neutralizes a base
c) all reactants are used up in a reaction
d) Dissolving of ionic bonds when placed in water
How many moles are in 2.3 grams of phosphorus?
a) 0.037 moles
b) 0.148 moles
c) 0.074 moles
d) 0.145 moles
What pH can we expect Sodium Hydroxide to have NaOH?
a) pH less than 7
b) pH equal to 7
c) pH?
d) pH greater than 7
When combined with a metal a strong acid will produce what?
a) CO2 Gas
b) H2 Gas
c) A terrible smell
d) CO Gas
a subscript of (aq) means what
a) the sample came from under the sea
b) It is dissolved in water
c) It is a barbie girl
d) It is a solid
Using the Arrhenius definition, classify KCl as an acid, a base, or a salt.
a) Acid
b) Base
c) Salt
d) exothermic
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 level
A compound containing 3x10-11 hydrogen ions per liter would have a pH of ______
a) 3
b) 11
c) -11
d) Acidic
In order to dispose of chemicals into local sewer systems companies must perform an acidity check on their wastes. Why do you think that might be?
a) To prevent environmental disturbances to pH in local water.
b) To justify the existence of the EPA.
c) To Verify that nothing strange is dissolved in solution.
d) To insure that the sewer pipes will not be unnecessarily stressed by harsh chemicals
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