Gibb's Free Energy
If ΔG<0, the process is said to be this
what is spontaneous?
In a galvanic cell, electrons flow from this electrode to the other.
What is the anode to the cathode?
Doubling a reactant’s concentration doubles the rate. This is the reaction order with respect to that reactant.
What is first order?
This constant, Ksp, describes the equilibrium for this process.
What is dissolution of a sparingly soluble salt?
Where is Juliana moving to next?
what is Boston?
At equilibrium, this is the value of ΔG
what is zero?
This equation corrects Ecell∘ for non-standard concentrations.
What is the Nernst equation?
In a consecutive reaction A→B→C, when the intermediate B does not accumulate and the rate-determining step is the first step, this approximation can be used to simplify the kinetics.
What is the steady-state approximation?
Adding a common ion to a saturated solution causes this effect.
What is decreased solubility (common ion effect)?
What is Lauren's favorite piece of fashion to style?
a) top
b) pants
c) jewellery
d) shoes
what is pants?
A reaction has ΔH=50.0 kJ/mol and ΔS=+0.125 kJ/(mol·K). Above what temperature (in K) will the reaction become non-spontaneous? Use ΔG=ΔH−TΔS
What is less than 400 K?
If Ecell is negative, the reaction is this kind of process.
What is non-spontaneous?
The units of k for a third-order overall reaction are these.
What are M−2 s−1 or L2 mol−2 s−1?
The overall equilibrium constant for complex ion formation is called this.
What is the formation constant, Kf?
How many years has Joseph worked at Columbia University?
What is 17 years?
Using ΔG=−RTlnK, compute K when ΔG = -52kJ/mol and T = 273 K
what is 9.1×109?
Balance the following redox reaction in basic conditions and identify which species is being reduced:
MnO4−(aq)+I-(aq) → MnO2(s)+I2(s)
2MnO4−+6I−+4H2O → 2MnO2+3I2+8OH−
what is MnO₄⁻ is reduced?
The rate constant k1 for a certain reaction at 300 K is 2.5×10−3 s−1. The activation energy Ea for the reaction is 75 kJ/mol.
Using the Arrhenius equation, calculate the rate constant k2 at 350 K.
ln(k1/k2)=-Ea /R (1/T1−1/T2)
what is 0.183 s−1?
Lead(II) iodide has Ksp=7.9×10−9 What is the maximum iodide ion concentration possible in a solution where [Pb2+]=2.0×10−3 M?
what is 1.99×10−3M?
What is Professor Savizky's rating on "Rate My Professor"?
what is 2.6?
Using the standard Gibbs free energies of formation below, calculate ΔG° for the combustion of propane gas at 298 K:
Reaction:
C3H8(g)+5 O2(g)→3 CO2(g)+4 H2O(l)
SubstanceΔG°f (kJ·mol⁻¹)
C₃H₈(g) −23.5
O₂(g) 0.0
CO₂(g) −394.4
H₂O(l) −237.1
what is −2,195 kJ·mol⁻¹?
A copper electrode is immersed in a Cu²⁺ solution. When copper metal with a mass of 0.450 g is deposited on the electrode by passing an electric current, calculate the total charge (in coulombs) that passed through the solution.
The standard reduction reaction is:
Cu2++2e−→Cu(s). E∘=+0.34
(Molar mass of Cu = 63.55 g/mol, Faraday’s constant = 96485 C/mol e⁻)
what is Q=1365.4C?
Consider the following proposed mechanism for the reaction:
Step 1 (fast equilibrium):A+B⇌C(k1,k−1)
Step 2 (slow, rate-determining):C+D→E(k2)
Step 1 is a fast reversible equilibrium.
Step 2 is the slow, rate-determining step.
Write the rate law expression for the overall reaction based on the mechanism.
what is Rate=k2[C][D]?
What is the molar solubility of calcium fluoride, CaF2, in a 0.030 M sodium fluoride solution?
Given: Ksp(CaF2)=3.9×10−11
what is 4.33×10−8 M?
What costume do you think Professor Savizky would wear for Halloween? (I have a picture to prove it)
*Hint* - category is video game
what is Mario?