Electrochemistry
What is oxidation?
Oxidation is the loss of electrons from a given substance (atoms, ions, etc.).
What is the charge of an electron?
Negative charge.
What kind of change is boiling?
Physical change.
Can an insoluble compound dissolve in water?
No.
Is glucose (C6H12O6) an organic compound?
Yes.
What is reduction?
Reduction is when any given substance (atoms, ions, etc.) gains electrons.
What are valence electrons?
They are the electrons located on the outermost orbital of an element.
Given the equation:
2H2 + O2 → 2H2O
What type of reaction is this?
Synthesis reaction.
Does ammonia (NH3) dissolve in water?
Yes, ammonia dissolves in water.
What is the molecular formula of butane?
C4H10
What is a key component that an electrolytic cell has that voltaic (galvanic) cells do not have?
Electrolytic cells have batteries (or an alternative power source) while voltaic cells do not.
What is chlorine's electron configuration in the ground state?
It is 2, 8, 7.
Given the equation:
NaCl + HF → HCl + NaF
What type of reaction is this?
Double Displacement/Replacement reaction.
At 90°C, how many grams of NaCl does it take to saturate 100g of H2O?
40 grams.
What is the molecular formula of 3-hexene?
C6H12
What direction do electrons flow in electrochemical cells?
They flow from the anode to the cathode.
What are the 4 types of orbitals?
The s, p, d, and f orbitals.
Given the equation:
2C2H6 + 7O2 → 4CO2 + 6H2O
What type of reaction is this?
Combustion reaction.
What will happen to the solubility of NaCl (s) if the pressure of the container is increased?
Nothing will occur.
CH3CH2CH2CH2CH2CH2CH3
What is the purpose of the salt bridge in voltaic (galvanic) cells?
The salt bridge allows ions to flow, maintaining electrical neutrality for the whole voltaic cell.
How many electrons can each orbital hold?
s = 2
p = 6
d = 10
f = 14
Given the reactants NiCl2 and Ag, will the two be able to react?
No, they will not react.
What happens to the vapor pressure when the temperature is increased from 20°C to 40°C?
Given the equation:
CH3COOH + HOCH2CH2CH3 → H3CCOOCH2CH2CH3 + H2O
What type of organic reaction is this?
Esterification.