CHEM 101 chp 6-8 test
Card Set Information
CHEM 101 chp 6-8 test
Species present before the reaction.
Materials to the left of the chemical equation.
Species present AFTER the reaction.
Materials on the right side of the chemical equation.
The number of particles in a mol.
6.02 * 10^23
The amount of substance that contains Avogadro's number.
The average/sum mass of a formula units of a substance.
The mass of one mole of a substance.
Molar Volume of a gas
The volume occupied by 1 mol of an gas at STP (standard temperature & pressure)
Finding Molecular Mass
Add up the mass of each element.
Mo- 96 * 1
O- 16* 3= 48
Molecular mass is 96+48= 144g
Mathmatics of Chemistry
At constant temperature, the volume of a gas is inversely proportional to its pressure.
*When temp is constant
- if increased P, decrease V
-if decreased P, increase V
At constant pressure, the volume of a gas is Directly proportional to its absolute temp.
*When pressure is constant
-increase T, increase V
-decrease T, decrease V
Ideal Gas Law
P- pressure (atm)
V- volume (Liters)
n- number of moles
R- constant- .0821
T- temperature (K)
moles of solute/ liters of solution
According to Arrhenius, acids form hydrogen ions (H+)
Acids taste sour, turn litmus red, react with bases to form water and salt.
According to Arrhenius, bases produce hydroxide ions. (OH-)
Bases are bitter, turn litmus blue, reacts with acids to form water and salt.
Believes that acids in an aqueous solution form hydrogen ions (H+). and bases produce hydroxide ions (OH-).
In the equation, the products get H+ or OH- alone.
Limitations- H+ doesn't really exist.
Bronsted- Lowry Theory
Acids are proton donor, and
Bases are proton acceptor.
IN the equation, H^3O is a product for acids.
This is more realistic than Arrhenius.
Strong vs Weak acids
Strong acid- ionize/reacts completely in water to form H+ and an anion.
Weak acid- only partially ionizes/reacts with water
Strong vs Weak bases
Strong base- completely iionizes in water to form OH-.
Weak base- only slightly ionizes.
The reation between an acid and a base, giving a product of water and salt.
pH and pOH scale
pH- acidic to basic 1-14
pOH- the opposite
basic to acidic 1-14
What is the pH of 1*10^5? pH=5
What causes the Oxidation
What causes the Reduction
Pieces of metal where electrons are transferred.
Electrode where oxidation occurs
Electrode where reduction occurs
The reduction of carbon dioxide