Gases
____'s law states that solubility of a gas in a liquid is directly related to pressre of that gas above the liquid
Henrys
Identify if the object is a solution, suspension, or colloid:
Marshmellows
Colloid
Name this compound:
H₂So4
Sulfuric Acid
A buffer is composed of what 2 things?
Weak Acid + conjugate base
A solution is prepared by dissolving 25 g of NaCl in 200 g of water. What is the mass percent of NaCl in the solution?
11.1%
Which of the following is not part of the kinetic molecular theory of gases?
a)A gas is composed of very small particles
b)There is very little empty space in a gas
c)Gas particles move rapidly
d)Gas particles do not attract or repel one another
e) Gas particles move faster when the temperature increases
b)There is very little empty space in a gas
How do you add more of a solute to a solvent than what it is actually supposed to hold?
Increase temperature
A chemical reaction is at equilibrium when the rate of the forward is _____(more, less, equal) to the rate of the reverse reaction. What principle is this
Equal, Le Châtelier’s
During the process of diluting a solution to lower the concentration, does the amount of solute:
increase,decrease, or stay the same
stay the same
A chemist dissolves 5.00 grams of sodium chloride (NaCl) into 250.0 mL of water. What is the molarity (M) of the resulting solution?
0.342M NaCl
273k and 1 atm
T or F. A strong electrolyte only partially ionizes due to the strong attraction of the ions to rejoin and turn back into the original species.
False
Since water is an acid and a base it is a _____ substance.
amphoteric
What is the product of H3O and OH equal to,
What is the product of pH and pOH equal to
1.0*10^14
14
How much 3.0 M HCl solution should be diluted to prepare 750 mL of a 1.0 M HCl solution?
You need 250 mL
What are the combination and ideal gas laws?
Combination:P1V1/T1=P2V2/T2
Ideal=PV=NRT
What solution is isotonic to a red blood cell?
0.9% sodium chloride and 5% glucose
Red blood cells undergoing "shrinkage" is called ___, while once that undergo swelling are classified as ____.
crenation, hemolysis
Identify the Acid, Base, Conjugate Acid, and Conjugate Base:
HCO3+NH3=CO3^-2+NH4
A+b=CB+CA
The pH of a substance is 5.4. Give the pOH, H3O, and OH. Classify if it is an acid, neutral, or base.
H3O=3.98x10^-6
OH=2.51x10^-9
A 3.0 L sample of gas is at a pressure of 1,520 mmHg. and a temperature of 27 C. If the gas is expanded to a volume of 5.0 L and the temperature is increased to 350 K, what will be the new pressure in atm?
1.4 ATM
an ___ is a fraction or part of the original solution that is used to make a diluted solution
aliquot
Name all 6 strong acids
H2SO4(sulfiric acid)
HI(hydroiodic acid)
HCLO4(perchloric acid)
HBr(hydrobromic acid)
HNO3(nitric acid)
HCl(hydrochloric acid)
acid+carbonate=
neutralization=
metal+acid=
Co2+H2O+Salt
Salt+H2O
Salt+H2
60.0ml of 1.2 M NaOh is required to neutralize 40.0ml of HF. What is the molarity of HF?
HF+NaOH=NaF+H2O
1.8M