July 09, 2020, 02:18:45 AM
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Topic: Write the balanced net ionic eqtn for any reaction that occur when...  (Read 2789 times)

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Offline allo_321

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(i) Dilute acetic acid is added to solid nickel (II) carbonate.
2CH3COOH(aq) + NiCO3(s) ------> (CH3COO)2(?)Ni + H2CO3(?)

(ii) Concentrated solutions of calcium nitrate and sodium hydroxide are combined.
Ca(NO3)2(aq) + 2NaOH(aq) ------> Ca(OH)2 + 2NaNO3

(iii) Concentrated solutions of mercury (II) nitrate and sodium iodide are combined.


hi guys.. im stuck on the balanced equation firstly.. i've written what i THINK the full balanced equations.. im also confused about the states if u could plz help me with those too!!

thank you so much!

Offline allo_321

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sorry i forgot to write the equation for the last one...

Concentrated mercury (II) nitrate + sodium iodide...

Ag(NO3)2(aq) + 2NaI(?) ----> AgI2(?) + 2NaNO3(aq)

once again im not sure of the states..

as for the balanced ionic equations.. for the first one.. im not sure how to do :S

the second one:

Ca2+(aq) + 2NO31-(aq) + 2Na 1+(aq) + 2OH 1-(aq) --------> 2Na1+(aq) + 2NO31-(aq) + Ca2+(aq) +2OH1-(aq)

which results in...

Ca2+(aq) + 2NaOH1-(aq) ------> CaOH(aq) + Na(aq)

lol... i have a good feelings its wrong because i only got half a mark for this question...

as for the third part.. i got it completely wrong.. so thanks for whatever help you can give me :)

Offline Sev

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Quote
Concentrated mercury (II) nitrate + sodium iodide...

Ag(NO3)2(aq) + 2NaI(?) ----> AgI2(?) + 2NaNO3(aq)

Mercury is not Ag.  As for states, try checking HgI2 solubility.

Offline allo_321

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Hg.. thats right. my bad  :)...

i have my exam coming up this week and im having trouble remembering the solubility rules, any ideas?

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