Calculate the molarity of a solution of 4.768 g NaClO in 100.00g H2O. (Assume density of solution is the same as the density of water) Sig Figs count.
What is 0.6113 M?
100
Reaction rates _____ as reaction time increases.
What is decreases?
100
Determine the Kp of the reaction at 25C
CO + 2H2 <--> CH3OH Kc = 14.5
What is Kp = 9.23*10^-3
100
This is a proton acceptor.
What is a Bronsted-Lowry Acid
100
Measure of the amount of acid or base a buffer can absorb without a significant change in pH.
What is buffer capacity?
200
Properties that depend on the amount of dissolved solute but not the chemical identity of the solute
What are colligative properties?
200
For the 2nd order reaction,
2NO3 --> 2NO2 + O2
t1/2 = 4376s. If the initial concentration of NO3 is 7.34*10^-3M, determine how long it will take to reach 1.00*10^-5M.
What is 891h
200
Type of reaction:
H2 (g) + Cl2 (g) <--> HCl (g)
What is homogeneous reaction?
200
Liquid drain cleaner has a pH of 13.67, determine the hydroxide concentration.
What is 0.47M?
200
Calculate the pH of the solution:
3.0L of 0.42M HCOOH and 0.25M HCOOK
Ka (HCOOH) = 1.8*10^-4
What is 3.5?
300
The strongest intermolecular force between CH3CH2OH in water
What is hydrogen bonding?
300
Given the following information:
2NO + H2 --> N2O + H2O
Exp [NO] [H2] rate
1 0.10M 0.10M 3.29*10^-5
2 0.20M 0.10M 1.32*10^-4
3 0.10M 0.30M 9.87*10^-3
Determine the rate law.
What is rate = 0.0329 [NO]^2 [H2] ?
300
DOUBLE JEOPARDY!!!!!
Calculate equilibrium concentrations of all species of:
H2 + Br2 <--> 2HBr
Initial concentrations:
[H2] = 1.34M
[Br2] = 4.21 M
Kc = 3.62*10^-5
What is [H2] = 1.33M
[Br2] = 4.20M
[HBr] = 0.0143M ?
300
The type of acid/base: HF
What is a weak acid?
300
Most effective buffer solution ratio of [acid]:[base]
What is 1:1?
400
Calculate the freezing point of a 25.0% solution of KCl.
What is -16.6 C?
400
Write the overall rate law for the following reactions:
Cl2 (g) <--> 2Cl (g) fast k1 (k2 reverse)
Cl (g) +CH2Cl2(g) --> HCl +CHCl2(g) slow k3
Cl(g) +CHCl2(g) --> CHCl3 fast k4
What is rate = K3 * (K1/K2)^1/2 * [Cl2]^1/2 * [Ch2Cl2]
400
Determine the direction the reaction will proceed in if
[H2O] = 1.92 M
[H2] = 2.65 M
3Fe (s) + 4H2O(g) <--> Fe3O4(s) + 4H2(g)
Kc = 1.23
What is towards reactants.
400
Calculate the hydronium concentration of a 0.350M solution of CH3CO2H.
Ka = 1.8*10^-5
What is 2.50*10^-3M ?
400
Determine the pH:
2.5L solution of 0.250M HF and 1.00M KF.
After the addition of 200.0mL of 0.10M NaOH
Ka (HF) = 2.37*10^-6
What is 6.24?
500
The direction of water flow with one side of a membrane having 1.0M C6H12O6 and the other side having 0.20M Ca(OH)2.
What is toward C6H12O6
500
The number of half lives it takes for the concentration of NO to go from 1.00*10^-3 M to 5.62*10^-6M.
What is 7.47 half lives
500
Determine the direction the reaction will go if the temperature increases:
NO(g) + O3(g) <--> NO2(g) + O2(g) ΔH = -305kJ
What is towards reactants?
500
Determine if the compound is acidic/basic/neutral
CH3NHF
Kb (CH3N) = 1.83*10^-2
Kb (F-) = 2.83*10^-6
What is a basic salt?
500
Prepare a buffer solution with a pH=5.80 and a volume of 500mL when you have:
1L 0.500M HCOOH (Ka = 1.34*10^-6)
1L 0.0200M HF (Ka = 5.82*10^-3)
1kg NaF
1kg NH4Br
1kg NaCOOH
What is 14.5g NaCOOH and fill with 0.500M HCOOH until 0.500L.