Question 9 6 pts (27) Mno, will hydrolyze with water to form gaseous oxygen (O2) via...

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Question 9 6 pts (07) Mno, will hydrolyze with water to form gaseous oxygen (O2) via...

Question 9 6 pts (07) Mno, will hydrolyze with water to form gaseous oxygen (O2) via the reaction (spontaneous as written) with E10.20V: 4Mno, (aq) + 2H20 (1) ► 4MnO2(s) + 302(g) + 40H" (aq) Calculate Ecell of this spontaneous redox reaction at 25 C under the following conditions: pH = 10 PO2 (pressure) = 0.20 atm and [Mno2) - 1.0 104M Answer in 2 significant figures. 0.25 V 0.217 -0.21V 0.19 V 0.0V
the first picture is about some useful information, and the second picture is the question that...

the first picture is about some useful information, and the second picture is the question that bothers me. I wonder how we know the half-cell reaction of it. Please explain!!! TABLE 18.1 | Standard Reduction Potentials at 25°C (298 K) for Many Common Half-Reactions 8° (V) 0.40 0.34 0.27 0.22 0.20 0.16 0.00 Half-Reaction F2 + 2e →2F Ag2+ + e +Agt Co3- + e + CO2- H2O2 + 2H+ + 2e +2H20 Ce+ + e + Ce+ PbO2 +...