Question

Which of the below is NOT a voltaic cell?
a) Mg/Ag
b) Mg/Cu
c) Mg/Zn
d) Zn/Pb

Answer 1

I KNOW THAT A AND B IS WRONG

Answer 2

you have to check the reduction potentials table and see if the reaction is above or below. Or the difference of the voltage, if it is positive the reaction is sponntaneous

Answer 3

BOTH OF C AND D ARE BELOW

Answer 4

the others?

Answer 5

http://www.fccj.us/chm2046/SampleTest/46M14eAnswer_files/image002.jpg

Answer 6

OTHERS ARE COMMON EXAMPLE OF THE CELL

Answer 7

do you mean i have to calculate E if its "positive ">> is included as voltaic cell

Answer 8

usually just looking at the relative position of the reactions in the table and knowing that the first element in the couple is the one in the anodo and is going into oxidation, if it is below in the table than the second element you have a spontaneous reaction

Answer 9

???? but both of two element are below which means ??

Answer 10

looks that all of them are voltaic cells

Answer 11

wow

Answer 12

there is no correct choice

Answer 13

?

Answer 14

this is confusing

Answer 15

where is the question from?

Answer 16

lap experiment voltaic cell

Answer 17

are you sure

Answer 18

??

Answer 19

I am double checking

Answer 20

thank you <3

Answer 21

The question if from a printed book or typed by the teacher? there is the possibility of a typo mistake in the question?

Answer 22

i think by a lab instructor

Answer 23

from these

Answer 24

this question is pre-lab equation

Answer 25

sorry *question

Answer 26

this is the question

Answer 27

so it either c or d

Answer 28

I dont know!! sorry, you should ask your teacher and let me know the answer so I can learn something.
So far we are doing everything fine, the first metal is the one undergoing oxidation and if the reaction is bellow in the table means that the oxidation potential will be higher than the reactions above in the table

Answer 29

thank you .. i will ,, you did your best though .. much appreciated <3... i will send you the answer later :P

Answer 30

Thanks!