Question

Easy chemistry questions! JUST TWO

Answer 1

Which of the following combinations would require an electrolytic cell? (Use the table.)


coat aluminum onto iron

coat iron onto lead

coat copper onto tin

coat calcium onto iron

Answer 2

@callielovesyhuu

Answer 3

If i remember correctly electrolytic cells have overall negative E potentials.

Answer 4

So its not A! right?

Answer 5

So what were looking for here is a single replacement reaction. But we are looking for a single replacement reaction that would be non spontaneous. So which of these metals would not replace the other respective metal asked in the question?

Answer 6

Copper?

Answer 7

So electrolytic cells have an external power force that drive reactions that are non spontaneous forward. SOO the only reaction that is nonspontaneous would be Copper replacing Tin as on the activity series given Copper would not normally replace tin.

Answer 8

So yea the Copper replacing Tin

Answer 9

So its C?

Answer 10

A simple electrochemical cell can be made from copper and zinc metals with ... is used to drive a chemical reaction which would not occur spontaneously.

Answer 11

Yea, I am pretty certain as long as the fact that electrolytic cells have negative E potentials is correct that should be the right answer. I just not sure if I remember that right. In reality you would pick C. as it is the one of these things just doesnt belong here answer.

Answer 12

coat copper onto tin

Answer 13

@caldwelllayna I literally just explained that tho... XD

Answer 14

Thanks so much! Could you guys help me with one more?

Answer 15

sure

Answer 16

I can try :)

Answer 17

Which of the following is true regarding the pictured cell?



Electrons flow from the glasses to the gold strip.

Gold ions get reduced and coated onto the glasses.

Gold ions get reduced at the gold strip.

The metal of the glasses shrinks.

Answer 18

@sweetburger

Answer 19

So is this an experiment you have to do?

Answer 20

no

Answer 21

@caldwelllayna would be an expensive experiment with the amount of gold needed lol

Answer 22

LOL

Answer 23

I think its B..

Answer 24

I believe this is another example of an electrolytic cell as there is an external power source being the battery. Au is least likely to replace another metal in a replacement reaction. Because there is a driving force in the reaction I believe that Gold would be oxidized resulting in it losing electrons and giving the electrons to the glasses which would end up gold plating the glasses. This is a process usually called electroplating through hydrolyses i think? anyways the answer should be B. like you said :)

Answer 25

Thanks so much!:)

Answer 26

np np :)

Answer 27

lol