Science behind corrosion-test
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
Corrosion
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
I need help with these para rice problems. Thank you!
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[1] In basic solution balance the redox reaction
MnO, (aq)
MnO4 (aq)
MnO2(s)
Final balanced reaction equation:
[2] In acidic solution balance the redox reaction
Xe(g)
Cr,0, (aq)
Xe,Os(s)
Cr*(aq)
Final balanced reaction equation:
[3] Given the Standard Reduction Potentials at 25°C, Mn2++2e Mn E° = -1.185V and Hg*+2e Hg
E° = +0.851Vwhat is the spontaneous reaction between these two half-cells and what is the potential of the cell?
[4] For the reaction Sn(s) + 2Cu"(aq) →Sn (aq) + 2Cu*(aq) the calculated E° = +0.291V, calculate AG° and K for
this reaction. R = 8.314 J/mol•K.
[5] (Work on the back) For the reaction Cu(s) + 2 Ag → Cu²* + 2 Ag(s) E° = +0.462 V. Calculate the potential of the following
cell shown in cell notation. Is this non-standard cell spontaneous?
Cu(s) | Cu" (0.0037M) || Ag* (0.016M)| Ag(s)
+)
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