Gas Laws
P1V1=P2V2 is which Gas Law?
Boyles Law
What is an example of a Solvent?
Water, any liquid
What is an example of evaporation/vaporization?
Boiling Water
What is the formula for Ideal Gas Law?
PV=nRT
What does STP stand for?
Standardized Temperature and Pressure
Avagadro's Law is the __(inverse/direct)__ relationship between _______ and ________.
Direct; Gas and Volume
The more solute you add the more __________ it is.
Concentrated
Bathroom Mirrors getting foggy after shower is an example of...
Condensation
The Ideal Gas Law is a combination of which Gas Laws?
All (Charles, Boyles, Lussac, Avagadro's)
What is Temperature (K) and Pressure at STP?
273K; 1 atm
Give me the original and new formula for Charles Law.
V1/T1 = V1/T2; (V1)(T2) = (V2)(T1)
You need to make 10.0 L of 1.2 M KNO3. What molarity would the potassium nitrate solution need to be if you were to use only 2.5 L of it?
(M1)(V1) = (M2)(V2)
4.8 M
Gas to solid is called? Give Example
Deposition; Frost on windshield
What does R stand for in the ideal gas Law and what number/unit do we use for it?
Constant; (0.0821)(L)(atm)/(mol)(K)
What is the VOLUME of 5 mol of for any gas at STP?
(5)(22.4L) = 112 L
Give me a real life example of Gay Lussac Law
Heating up Spray Can; Temp goes up Pressure goes up leading to explosion
In order to maintain a sodium chloride (NaCl) concentration similar to ocean water, an aquarium must contain 3.6 g NaCl per 100 g water. What is the percent by mass of NaCl in the solution?
mass of solute/mass of solution x 100% =
3.5%
Does Sublimation require or remove energy?
Require/add
We are asked to solve for mol... what equation will we use? Would we need to flip R?
n= PV/RT ; Yes, because it is on bottom
Gas stoichiometry
Nitrogen and oxygen gasses react to form dinitrogen monoxide gas. What volume of (O2) is needed to produce 30 L (N2O)? Equation: 2N2 + O2 → 2N2O
15 L
V1=500 L, P1= 0.92 atm, T1= 473 K, T2= 293 K, P2= 30 atm
V2 =
V2 = 9.51 L
A solution is made by adding 25 mL of benzene to 80 mL of toluene. What is the percent by volume of benzene?
Volume of Solute/Volume of Solution x 100% =
23.8 %
What is Triple Point?
When a substance is Liquid, Solid, Gas all at the same time
P = ?
V= 0.602 L, n = 0.00801 mol, T = 311 K
0.340 atm
M (Molarity) = moles of solute/liters of solution
What is the molarity of a solution that was prepared by dissolving 14.2 g of NaNO3 (molar mass = 85.0 g/mol) in enough water to make 0.350 L of solution?
0.477 M