An MnO2(s) /Mn2+(aq) electrode in which the pH is 10.18 is
prepared. Part A Find the...
An MnO2(s) /Mn2+(aq) electrode in which the pH is 10.18 is
prepared. Part A Find the [Mn2+] necessary to lower the potential
of the half-cell to 0.00 V (at 25 ∘C). Express your answer using
two significant figures. [Mn2+] =
HClO(aq) = Cl2 (aq) Eo = + 1.611V
MnO4-1(aq) = MnO2(s) Eo = + 1.679V
In a particular cell, Ecell is measured to be +0.038v
when the pH in both half-cells is 4.00 and [Cl2] = 0.20 M, [HClO] =
0.10 M. What is [MnO4-1] in the solution?
Write unbalanced half-reactions for the following net ionic
equations.
Part A MnO4−(aq)+IO3−(aq)→MnO2(s)+IO4−(aq) Express your answers
as chemical expressions separated by a comma. Enter the reduction
half-reaction first. Identify all of the phases in your answer.
Part B NO3−(aq)+SO2(aq)→SO42−(aq)+NO2(g) Express your answers as
chemical expressions separated by a comma. Enter the reduction
half-reaction first. Identify all of the phases in your answer.
Consider a glass electrode or [pH electrode (combination
electrode). a. Identify the reference part. b. Identify the
indicator part. c. Explain how the potential of the electrode is
determined. d. Describe a two-point calibration of the electrode.
e. State any five of the eight possible errors that might occur in
pH measurements with the electrode.
Balance the following redox equation in basic conditions:
Ag(s) + MnO4⁻(aq) ⟶
MnO2(s) + Ag+(aq)
What is the stochiometric coefficient for H2O in the
balanced equation?
Consider the following reactions. reaction
MnO4−(aq) + Cl−(aq) → MnO2(s) + ClO3−(aq) in basic solution
Balance each equation under the specified conditions
Write balanced net ionic equations for the following reactions in
acidic solution:
Part A
MnO−4(aq)+IO−3(aq)⟶MnO2(s)+IO−4(aq)
Express your answer as a balanced net ionic equation. Identify
all of the phases in your answer.
Part B
Cu(OH)2(s)+N2H4(aq)⟶Cu(s)+N2(g)
Express your answer as a balanced net ionic equation. Identify
all of the phases in your answer.
Part C
Fe(OH)2(s)+CrO2−4(aq)⟶Fe(OH)3(s)+Cr(OH)−4(aq)
Express your answer as a balanced net ionic equation. Identify
all of the phases in your answer.
Part D
H2O2(aq)+ClO−4(aq)⟶ClO−2(aq)+O2(g)
Express your answer as a...
Calculate E∘cell for each of the following balanced
redox reactions. Are the reactions spontanous?
A) 2Cu(s)+Mn2+(aq)→2Cu+(aq)+Mn(s)
B) MnO2(s)+4H+(aq)+Zn(s)→Mn2+(aq)+2H2O(l)+Zn2+(aq)
C) Cl2(g)+2F−(aq)→F2(g)+2Cl−(aq)