SEL VOLTA
Flashcard
•
Chemistry
•
12th Grade
•
Practice Problem
•
Hard
emmimosa arunmba
Used 1+ times
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10 questions
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1.
FLASHCARD QUESTION
Front
Identify the reaction that does not occur spontaneously based on the following electrode potentials: Cr3+(aq) + 3 e → Cr(s) Eø = - 0.71 V Ag+(aq) + e → Ag(s) Eø = + 0.80 V Al3+(aq) + 3 e → Al(s) Eø = - 1.66 V Pt2+(aq) + 2 e → Pt(s) Eø = + 1.50 V Zn2+(aq) + 2 e → Zn(s) Eø = - 0.74 V Reactions: 1. Zn2+(aq) + Pt(s) → Pt2+(aq) + Zn(s) 2. Cr3+(aq) + Ag(s) → Ag+(aq) + Cr(s) 3. Al3+(aq) + Cr(s) → Cr3+(aq) + Al(s) 4. Ag+(aq) + Pt(s) → Pt2+(aq) + Ag(s) 5. Cr3+(aq) + Al(s) → Al3+(aq) + Cr(s)
Back
Ag+(aq) + Pt(s) → Pt2+(aq) + Ag(s)
2.
FLASHCARD QUESTION
Front
Diketahui data potensial standar berikut : Zn2+(aq) + 2 e → Zn(s) E° = - 0,76 volt Cu2+(aq) + 2 e → Cu(s) E° = + 0,34 volt Mg2+(aq) + 2 e → Mg(s) E° = - 2,34 volt Cr3+(aq) + 2 e → Cr(s) E° = - 0,74 volt Harga potensial sel yang paling besar terdapat pada ....
Back
Mg/Mg2+(aq)//Cu2+(aq)/Cu
3.
FLASHCARD QUESTION
Front
Zn2+ + 2 e → Zn Eo = - 0,76 Volt Cu2+ + 2 e → Cu Eo = + 0,34 Volt Which statement is incorrect regarding the two electrodes?
Back
ion Zn2+ lebih mudah tereduksi dibanding dengan ion Cu2+
4.
FLASHCARD QUESTION
Front
Dari data Eo Zn = - 0.76 Volt, dapat dikatakan bahwa dalam keadaan standar
Back
ion H+ lebih mudah tereduksi daripada ion Zn2+
5.
FLASHCARD QUESTION
Front
Bila dua potong logam, yaitu tembaga dan seng dengan Eoreduksi berturut-turut + 0,34 Volt dan - 0,76 Volt dicelupkan ke dalam asam sulfat 1 M, maka:
Back
tembaga larut menghasilkan gas hidrogen
6.
FLASHCARD QUESTION
Front
Calculate the standard cell potential for the reaction: 2 Al + 3 Ni2+ --> 2 Al3+ + 3 Ni Given: Ni + Fe2+ --> Ni2+ + Fe E0 = - 0.19 V Al3+ + 3e --> Al E0 = - 1.66 V Fe2+ + 2e --> Fe E0 = - 0.44 V
Back
+ 2.29 V
7.
FLASHCARD QUESTION
Front
Pada reaksi : Ni(s) + 2AgNO3(aq) --> Ni(NO3)2(aq) + 2Ag(s) Menurut reaksi diatas bagan sel volta dapat dituliskan dengan ....
Back
Ni | Ni2+ ||Ag+ |Ag
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