Gen Chem 1
Name the following: Fe2(SO3)3.
Iron(III) sulfate
Give the Bronsted-Lowry Definition of acids.
Hydrogen donor
Give the definition of deltaGnought.
deltaGnought is the change in free energy under standard conditions.
Give the definition of gamma decay.
A type of radioactive decay that occurs when the nucleus disspates extra energy but does not have a change in the number of protons, neutrons, or electrons.
Which ion has the largest ionization energy? Bromine, Krypton, Iodine, or Xenon?
Krypton
What is the overall order and units of the reaction? Rate = k[A]3[B]
Fourth order. M-3s-1.
Which of these has the potential to be a good buffer? HCl, HI, HSO4, or HF?
HF
Given deltaH = 400C and deltaS = 528 J/molxK. Under what temperature is deltaG spontaneous?
High temperatures.
What is the reducing agent in the following equation? Zn(s) + Cu2+ (aq) -> Zn2+ + Cu(s).
Zn(s)
Give the oxidation number for sulfur in H2SO4.
-II
Given this equation: Pb(NO3)2(aq) + 2KI(aq) -> Pb2I(s) + 2KNO3(aq). Which way would the equilibrium shift if you add more Pb(NO3)2(aq) and Pb2I(s). And why?
Right. Solids will have no effect on equilibrium but the Pb(NO3)2 will shift equilibrium to the right.
Rank the pH of the of the following: HCl, NaOH, CH3COOH, NH3 from lowest to highest.
HCl, CH3COOH, NH3, NaOH
Given the vapor pressure of water is 23.8mmHg. What is the vapor pressure if 50g of glucose is dissolved in 200g of water?
23.2mmHg
Carbon-14 undergoes radioactive decay to form nitrogen-14. Which form of decay is this?
Beta decay
Between which two energy levels would have the largest increase?
A. n=2 to n=5
B. n=5 to n=6
C. n=8 to n=4
D. n=2 to n=infinity
E. n=1 to n=2
n=1 to n=2
Given the equation, CaCO3(s) -> CaO(s) + CO2(g). deltaH = 109.5kJ. Which way would equilibrium shift if more heat is added? Why?
Right. The reaction is endothermic, so more heat would shift toward the products.
Name the strong bases. There are 8.
LiOH, NaOH, KOH, Ca(OH)2, Sr(OH)2, Ba(OH)2, RbOH, CsOH
If the reaction has deltaH = 125kJ and deltaS = 250 J/mol*K, under what temperature is deltaG spontaneous?
500K
In what direction do electrons flow in the voltaic cell?
Electrons flow from the anode to the cathode across a wire.
What is the molecular shape and bond angle for CH4?
Tetrahedral. 109.5 degrees.
Given the equation: N2O5(g) -> 2NO2(g) + 1/2O2(g). If the k constant is equal to 3.0x10-5s-1, and the initial concentration of N2O5 is 0.020M, how much of the N2O5 is left after decomposing for 2 hours?
0.0161M
Given 0.15 mol of NH3(aq) are dissolved in water in a container containing a total of 1.0L. Find the pH of the resulting solution. The Kb is 1.8x10-5.
11.2
When dissolving 15.0g of NaCl in 250g of water. Find the freezing point of the solution.
-7.6C
Given the equation: Zn(s) + Cu2+ (aq) -> Zn2+ + Cu(s). And the standard reduction potentials: Ecell of Zn is -0.76V and Ecell of Cu is +0.34V. What is the Ecell of the reaction?
+1.10V