Aqueous Solutions
Reduction and Oxidation of Metals
Organic Chemistry
Practice Problems
Bonus
100
The charges of the Proton, Neutron, and Electron are __?, __?, and __? respectively
1+, 0, 1-
100
Define Oxidation and Reduction in terms of electron transfer.
Oxidation is the loss of electrons
Reduction is the gain of electrons
100
During the complete Combustion of Methane (CH4), which Two products are formed?
H2O and CO2
100
Every 1000 kg of ore mined from Kidd Creek Mine in Ontario typically contains about 16 kg of copper and 58 g of silver. Determine the percentage of the ore that contains copper.
1.6%
100
What temperature does water typically freeze at?
0o C
200
Which property of Water is primarily responsible for its ability to Dissolve many ionic compounds
Its Polarity
200
Use your knowledge of reduction and oxidation to explain what occurs to a metal when it corrodes
Corrosion occurs when most or all of the atoms on the same metal surface are oxidized, damaging the entire surface. As oxygen is reduced, it forms an oxide with the metal resulting in Fe2O3 (if reacting with iron).
200
Classify the molecule C3H8 as an alkane, alkene, or alkyne, and state the name of the molecule.
C3H8 (propane) is an alkane.
200
You have 65.0mL of a 0.759mol/L solution of Sodium Chloride; NaCl(aq)
Calculate the final concentration of the solution if it is diluted to a final volume of 100.0mL
0.493mol/L
200
Halogens typically come in groups of __?
Halogens typically come in groups of 2.
300
Avogadro's Number is _____x10?? units in any one Mole of substance.
6.02214076 × 1023 or 6.02x1023
300
Define what a Spectator Ion is
A spectator ion is an ion that exists both as a reactant and a product in a chemical equation.
300
Name the Reaction Type in which Hydrogen is added across a carbon-carbon double bond (C=C) to form a saturated molecule (C-C)
This is called Hydrogenation
300
What is the IUPAC name for the following compound?
A hint has been provided in the image
3-ethyl-2,4-dimethylhexane
300
C6H14 is the molecule _______. How do you know?
C6H14 is hexane, we can remember this because
5->hex (think hexagon).
400
What are some main properties of Ionic Compounds?
Brittle, High Melting Point, Soluble in water
400
Define what an Anode and a Cathode are.
The cathode is the positive electrode, where reduction (gain of electrons) occurs
The anode is the negative electrode, where oxidation (loss of electrons) takes place.
400
What is the Structural Formula for ethanol (C2H5OH) and what are the Functional Groups?
CH3-CH2-OH (contains a Hydroxyl group -OH)
400
What is the balanced chemical equation for the combustion of 2-pentyne
C5H8(g) + 7O2(g) -> 5CO2(g) + 4H2O(g)
400
All ________ _________ involve collisions between atoms and molecules
Chemical Reactions
500
Identify the difference between a Chlorine Atom and a Chloride Ion
A Chlorine Atom is neutral, with 17 protons and 17 electrons, while a Chloride Ion has 18 electrons and 17 protons, giving it a negative charge of (-1)
A Chlorine Atom is unstable while a Chloride Ion is stable due to its outer shell being complete with the added electron
500
In the following reaction, identify which is oxidized and which is reduced:
Mg(s) + 2H+(aq) --> Mg2+(aq) + H2(g)
Magnesium (Mg) is oxidized (it loses electrons)
Hydrogen ions (H+) are reduced (they gain electrons)
500
Describe the similarities in terms of structure and in terms of properties between saturated fat and trans fat.
Both saturated fatty acids and trans fatty acids are hydrocarbons consisting of long, straight chains. Because the chains are straight, these molecules can pack together tightly, allowing for stronger forces of attraction to build between the molecules than if they had a bent shape. The result is that these compounds have higher melting and boiling points than bent molecules with the same number of carbon atoms. (This is why the products that contain saturated fat and trans fat tend to be solids at room temperature while the unsaturated, bent fatty acids found in plant oils are liquids at room temperature.)
500
Based on the following Redox Reaction, what is the half reaction for the oxidizing agent?
Reaction: zinc metal in silver nitrate solution
2Ag(aq) + 2e- => Ag(s)
500
______ bonds result from the electrostatic attraction between metal cations and free floating electrons. The nature of this bonding is the reason behind many properties of ____ elements, such as malleability and _________.
Metallic bonds result from the electrostatic attraction between metal cations and free floating electrons. The nature of this bonding is the reason behind many properties of Metal elements, such as malleability and Conductivity.