Question

#1: In the diagram attached inside, if electrons flow from the right half-cell to the left one through the wire, which of the following statements is true?

A. The metal strip on the right has a lower activity than the one on the left.

B. The activities of both metal strips are equal.

C. The metal strip on the left has a lower activity than the one on the right.

**i have no clue!! what do u think @aaronq :)

Answer 1

#2: Which part shown in the diagram attached is negatively charged?

A. solid Cu

B. solid Zn

C. wire

D. salt bridge

**my answer: B

but I'm not very sure :/ what do u think? :D

Answer 2

1. well if electrons flow from the right to the left, it means that the right half is being oxidized and the left half is being reduced... does that help?

ps. if both have the same activity (and same concentration) no electrons will flow

Answer 3

okay yeah i think so! :)

they both have the same activity right? except one is gold and another is like silver or something? so does that mean the answer for 1 is B. The activities of both metal strips are equal.??

Answer 4

2. But Zn is giving off electrons.. so it must be positive

Answer 5

ohhh i see.. :/ but solid Cu is positive too right? :/

Answer 6

for 1. noooo definitely not B haha i was trying to emphasize that it will not be B but i mustve confused you. Okay, in an activity series, electrons flow from higher to lower or lower to higher in the series?

Answer 7

for 2. nope! Cu2+ ions are attracted to the solid Cu. right?

Answer 8

ohh i see haha oops :P and yeah i think so right? for #1 :)

Answer 9

and #2, so Cu is negative then?

Answer 10

well if electrons are flowing to the Cu electrode and Cu2+ ions are attracted to it, it must be!

Answer 11

and i think electron flora goes from lower to higher activity, so yes A is right

Answer 12

flow**

Answer 13

awesome! :) kk

so #1 is A. The metal strip on the right has a lower activity than the one on the left. ???
and #2 is Cu?

Answer 14

yesssss

Answer 15

you can keep posting the other questions here but maybe post one until we answer it?

Answer 16

okay! :)

#3: If molten sodium chloride is split by electrolysis, which of the following reactions occurs at the cathode?

A. 2Cl- (l) --> Cl2 (g) + 2e-

B. 2Cl2 (g) --> 2Cl- (l) + 2e-

C. 2Na (l) --> 2Na+ (l) + 2e-

D. 2Na+ (l) + 2e- --> 2Na (l)

**my answer: C

is that right? :)

Answer 17

does oxidation or reduction happen at the cathode?

Answer 18

reduction right? :D

Answer 19

yesss, but C is an oxidation reaction..

Answer 20

ohhh okay.. :(

idk then :( what do u think?

Answer 21

well you're saying that at the cathode, reduction happens, right?

reduction reactions look like this:

X+ + e -> X

Answer 22

ohh so is it D then?

Answer 23

yep!

Answer 24

aweosme! :) thank you! :D ima post the next one in a new post :)

Answer 25

no problem! okie :)

Answer 26

aweosme! :) thank you! :D ima post the next one in a new post :)