Chemistry 1
3115P3-
This atom has _ neutrons.
This atom has _ protons.
This atom has _ electrons.
1) What is 16
2) What is 15
3) What is 18
This term means that the molecule can conduct electricity when dissolved in water.
What is Electrolyte?
1 atm = _ torr
What is 760?
A system does 975 J of work on its surroundings while at the same time it absorbs 625 J of heat. What is the change in internal energy, ΔU, for the system?
-350 J
What is the reaction order of the following rate law?
Rate = k[NO2][Na]
Second order
This type of electromagnetic wave has the longest wavelength.
What are radio waves?
List the halogens from lowest to highest activity(Activity series).
I < Br < Cl < F
What is the Ideal Gas Law and what does each term represent.
PV = nRT
Pressure, Volume, # of moles, Gas constant, Temperature
1 cal = __ J
What is 4.184?
What is the rate law of the following:
__________________________________________
[F2](M) | [ClO2](M) | Initial Rate(m/s) |
-----------------------------------------------------------
0.1 | 0.01 | 1.2*10-3 |
0.1 | 0.02 | 4.8*10-3 |
0.2 | 0.01 | 1.2*10-3 |
Rate = k[ClO2]2
This element is 1s22s22p63s23p63d44s2.
What is Chromium?
Assign oxidation states for the following reaction and determine what the oxidizing and reducing agents are.
Zn(s) + CuSO4(aq) __> ZnSO4(aq) + Cu(s)
Zn(s) + CuSO4(aq) __> ZnSO4(aq) + Cu(s)
0 +2 +6 -2 +2 +6 -2 0
CuSO4(aq) is oxidizing agent
Zn(s) is reducing agent
In these conditions, gases behave ideally.
What is high temperature and low pressure?
For calorimetry problems, this temperature unit is used.
What is Celsius?
If the energy of the reactants is 120 kJ, the energy of the products is 180 kJ, and the climax of the equation is 240 kJ, what is the activation energy and what is the ∆H of the equation?
Ea = 120 kJ
∆H = 60 kJ
This element has the highest electronegativity.
What is Fluorine?
Categorize the following molecules into strong or weak acids or bases.
HCl, HBr, HClO4, H3PO4, HF, Ca(OH)2, NaOH
Strong acids: HCl, HBr, HClO4
Weak acids: H3PO4, HF
Strong bases: Ca(OH)2, NaOH
Weak bases: None
An open manometer is filled with mercury and the closed end is filled with ammonia. If the mercury rises 23.4 mm on the side of the manometer attached to the ammonia, what is the pressure of the ammonia if the atmospheric pressure is 716 torr?
693 mmHg
Calculate the standard heat of formation, ΔH°f, for CH4
CH4(g) + 4F2(g) → CF4(g) + 4HF(g) ΔH°rxn = -1942 kJ/mol
C(graphite) + 2F2(g) → CF4(g) ΔH°rxn = -933 kJ/mol
H2(g) + F2(g) → 2HF(g) ΔH°rxn = -542 kJ/mol
-75 kJ/mol
What would the units be for the rate constant of a fourth-order reaction (time unit is arbitrary)?
1/(M3)(arbitrary time unit)
1) List the IMFs from weakest to strongest.
2) These IMFs are present in NH3
1) London Dispersion Forces, Dipole-Dipole, Hydrogen Bonding
2) All 3
Solve this half-reaction problem in a basic solution.
CrO42-(aq) + AsH3(g) __> Cr(OH)3(s) + As(s)
AsH3(g) __> As(s) + 3H+ + 3e- (Since As proportions are equal, we balance the hydrogen amount and charges for this half)
CrO42-(aq) + 5H+ + 3e- __> Cr(OH)3(s) + H2O(l)
(Cr proportions are equal so balance hydrogen, oxygen, and charges)
CrO42-(aq) + AsH3(g) + H2O(l) __> Cr(OH)3(s) + As(s) + 2OH- (Combine equations, cancel like terms, replace H+ ions with OH- because it's in a basic solution)
This is the average particle speed (m/s) of CO2 at 27.0oC using root mean square.
What is 412 m/s?
A 0.1111 g sample of octane, C8H18, was burned in the presence of excess O2 in a bomb calorimeter. The heat capacity of the bomb calorimeter was 1.726 x 103 J/℃. The temperature of the calorimeter and the 1.200 x 103 g of water rose from 21.11℃ to 23.05℃. What is the heat combustion per gram of octane?
-118 kJ/g
Using steady-state equilibrium, find the rate law of the second step.
Step 1 NO2(g) + NO2(g) ⇌ NO3(g) + NO(g)
Step 2 NO3(g) + CO(g) → NO2(g) + CO2(g)
Rate = k[NO2]2[CO]/[NO]