Molarity equations
A solution of sodium hydroxide, NaOH, contains 12.0 grams of solute in 2.00 liters of aqueous solution. What is the molarity of the solution?
12g NaOH=.3mol .3mol/2L= M=.15
What is 0.15
What volume of a 2.00 M stock solution of NaOH is needed to prepare 150. mL of 0.40 M solution?
m1v1=m2v2 v1=(m2v2)/m1
(.15L X .4M)/2M= 0.03L
What is v1= 0.03L or 30mL
Similar IMF's
What is what makes a soluble solution?
A more polar molecule makes what occur?
What is less of an interaction?
Amplitude, wavelengths, and frequencies.
What do electromagnetic waves include?
Calculate the molarity of a solution of potassium fluoride, KF, in which 58.0 grams of the compound are dissolved in 4.0 liters of solution.
58g KF=.9983mol .9983mol/4L=.25
M=.25
What is 0.25
A volume of a 120.0 mL of a 3.0 M stock solution of HCl is added to water to produce a dilute solution with a volume of 2.00 L. What is the molarity of the dilute solution?
M1V1=M2V2 M2=(M1V1)/V2
(.12L X 3M)/2L=.18M
What is M2=0.18
____ dissolves _____
What is like dissolves like.
A less polar molecules makes what occur?
What is more of an interaction?
Different shades and pitches
What do frequencies determine?
What mass of of sodium hydroxide, NaOH, must be dissolved in 150.0 mL of solution in order to prepare a 0.20 M solution?
Mol=ML O.2X0.15= 0.03Mol
(.03mol/1)X(39.997g/1 mol)=1.2g
What is 1.2 g
What volume of a .25M stock solution of CO2 is need to form 100mL of .1M solution
M1V1=M2V2 V1=M2V2/M1
(100mL)(.1M)/).25M)=40
V1=40mL
Why does oil stay on top of the water when mixed together?
It is because non polar solutes only dissolve in non polar solutes. Oil is nonpolar while water is polar, so the oil seperates from the water by staying on top.
What would LiCl mixed with water look like drawn?
LiCl would have two different atoms, one an anion and one a cation. In the drawing the Cl atom would be larger than Li because Cl is an anion. Then, the negative Cl would attract the 2 hydrogen's while the Li would attract the oxygen in H2O.
Ultraviolet, x-ray, and gamma
What are frequencies greater than visible light?
A solution contains 90.0 grams of glucose, C6H12O6 in 500. mL of solution. What is the molarity of the solution?
90g glucose= .499mol 500mL=.5L
.499/.5= 1
M=1
What volume of a .5M stock solution of H20 is needed o form 500mL solution of .15 molarity?
M1V1=M2V2 V1=M2V2/M1
(500mL)(.15M)/(.5M)=150mL
V1=150mL
Charged particles
What is what do ionic compounds in polar solvent make?
Distillation
What is the separation of chemicals by using the strengths of intermolecular forces.
Infrared, microwave, and radio.
What are frequencies not greater than visible light?
What is the molarity of a solution in which 51.0 grams of aluminum oxide, Al2O3, is dissolved in 500. mL of solution?
51g Al2O3=.5mol
.5/.5=1
M=1
What volume of a 18M stock solution of NaOH is needed to form 2L of a 1M solution?
M1V1=M2V2 V1=M2V2/M1
(2L)(1M)/(18M)=111
V1=111mL
Has no diploes, and dissolve in nonpolar solutes.
What are molecular compounds in solubility.
What has the highest boiling point:
C4H9OH or C5H11OH
What is the boiling point of C5H11OH. C5H11OH has a higher boiling point because it has a larger carbon train which contributes to having more intermolecular forces than C4H9OH. More IMF's go to a higher boiling point in a molecule.
Gamma rays-Highest energy, shortest wavelength, and the highest frequencies
What is the strongest type of light on the electromagnetic spectrum.