12 Which labeled x point identifies the volame of KOH at which pH pK. (a) A dent

Question

12 Which labeled x point identifies the volame of KOH at which pH pK. (a) A dentifies then.. Volume kole,10 10. Which of followi b) B the following physical phase changs has afH -o) d 5 (a) melting (b) boiling (e) freezing (d) no physical phase transition has Alt and A5 with opposite signs 11.: One mole of C2HsOHg)undergoes complete combustion accoeding in this balancnd edox eqation The oxidation number for one C atom in the reactant CjlyOH is 2 What isthe oidaion nunber for one C atom in the product,CO2, and how many electrons lost by the Catomsntsnachm! (a) In COr, oxaC- +4. A total of 12e are lost by the C atoms inths rton (b) In COp, oxC-0. A total of te" are lost by the C atoms in this reaction (c) InCO2, ox#C-+8. A total of 10e" are lostby the Catoms nths reaction (d) In CO2, ox#C +4. A total ofe-are lost by the Catoms in thisreaction 12 Consider the following net redox reaction for an electrochemical cel Which of the following properly identifies what is hapening at the cathod in (a) Copper) ion is reduced (b) Elemental iron is reduced. (c) Copper(I) ion is reduced. (d) Iron(ll) ion is reduced In a fuel cell the voltage does not vary depending on the chencal ion unle Fuel cells are galvanic cells and batteries are electrolyti cels 13. Which of the following is one way a fuel cellis ifrentl fom abutter? Fuel cells are not self-contained like batteries are (a) (b) on rockets Bteris camat Fuel cells can go into outerspace

Explanation / Answer

1. In answer 10 only in non spontaneous reactions this condition would satisfy...

2. And in answer 12th the last option is correct

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