May 2024
what is the oceans current pH level?
pH=8.0-8.1
Is Vitamin C classified as an acid or a base?
Acid
Mole (mol):
#Carbon atoms in 12.01g of Carbon
what is H2O in solubility terminology?
H2O= Universal Solvent
Why do airplanes that fly at high altitudes have pressurized cabins?
the pressure decreases.
3 ways CO2 is found in sea water from least to greatest %
.05% CO2 (aq)
10% carbonate
89.5% Bicarbonate
During chemical equilibrium, what is the same, and what is different?
same= Rate of both rxns
different=[ ] of reactants a products
explain what occurs when oils are placed in water
water & oil dont mix
what are the 2 reactants in this equation: C6H12O6(s)+9O2(g)->6CO2(g)+6H2O(l)
9O2
phase change of sublimation:
solid to gas
what does seawater with a pH of 8.0 or lower do to calcium carbonate shells?
dissolves/decomposes shells
What is pOH?
Measuring [OH^-1] to determine acidity and basicity of a soln.
"The solvent and solute of a solution can be either a ___, a ____, or a ____"
solid, liquid, gas
what is a synthesis reaction (SR)?
a chemical reaction where 2 or more reactants combine to form one product
Physical & Chemical properties: Is luster a physical or chemical reaction?
Physical
Le Chateliers Principle:
when an equilibrium system is stressed, the equilibrium will shift in a way that reduces the stress on the system.
what is pOH scale range?
14-0
what happens when decreasing the temperature of the solution to the solubility of the solute in the solvent?
solute will come out as a solid
what is a double displacement reaction (DDR)?
what is the SI unit of volume?
Cubic meters, M^3
Calculate pH of a 1.9 x 10^-12 M OH^-1 aqueous solution at 25 degrees C. State if the solution is basic, acidic, or neutral.
pH=2.28
acidic solution
Calculate the pOH of a 7.3 x 10^-9 M OH-1 aqueous solution at 25 C
pOH=-log [7.3 x 10^-9M]=8.14
Calculate the volume of a solution in mL prepared from a 6.75m NaOH solution made by dissolving 3.5 g NaOH in water
13mL
equation for solid sodium reacting with gaseous chlorine to produce sodium chloride
Na(s)+Cl2(g)->NaCl
Ideal Gas Law:
P(pressure)V(volume)=n(#moles)R(ideal gas constant)T(temperature)
PV=nRT