Question

When aqueous solutions of potassium carbonate and cobalt(II) iodide are combined, solid cobalt(II) carbonate and a solution of potassium iodide are formed. The net ionic equation for this reaction is:

Answer 1

first write the complete reaction, then eliminate the ions that are not involved in the reaction occurring (i.e. forming precipitate).

Answer 2

not involved? you mean the soluble ones

Answer 3

yep, the ones that are not involved in making the precipitate.

Answer 4

okay hold on im writing it out

Answer 5

would it be CO3^2-+CO^2+> CO2+ +CO3^2-

Answer 6

nope. where are the parts that form the precipitate?

Answer 7

2k+ + CO3^2- +CO^2+ +2I- > CoCO3 +K+ +I-

Answer 8

so don't show \(K^+\) or \(I^-\), otherwise it's good.

Answer 9

so the 2k+ is okay also

Answer 10

nope, don't show those ions at all, because they're spectator ions

Answer 11

okay so CO3^2- +Co^2+ > CoCO3 (S)

Answer 12

thas my answer?

Answer 13

yep, thats it

Answer 14

YES ! THANK YOU

Answer 15

so like before there was 2k in one side and in the other just k..it doesnt matter if there identical there eliminated because they fall under the solubility rule right?

Answer 16

we'll technically they should be balanced, so K should appear the same amount of times. But you're correct that they're eliminated because of their solubility.

Answer 17

okay i have one more question could you wait a little bit for me?

Answer 18

sure, post it and i'll come back to take a look at it.

Answer 19

When aqueous solutions of sodium acetate and hydrobromic acid are mixed, an aqueous solution of sodium bromide and acetic acid results. Write the net ionic equation for the reaction.

Answer 20

so i have NaC2H302- + H+ > H- + C2H402

Answer 21

close. you have too many H's.

Answer 22

and while acetate is negatively charged, the sodium ion counteracts that charge and thus is neutral.