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Write a balanced chemical equation for the reaction depicted in this figure. Express your answer as a chemical equation. Identify all the phases in your answer.

This is what I have tried so far:

NH4NCS(aq) + [Fe(H2O)6]3+(aq) -> [Fe(H2O)5NCS]2+(aq) + H+(aq) + NH4OH(aq)

NH4NCS(aq) + [Fe(H2O)6]3+(aq) -> [Fe(H2O)5NCS]2+(aq) + H2O(l) + NH4+(aq)

  • $\begingroup$ Both equations are correct and equivalent =) $\endgroup$ – Jan Dec 9 '16 at 1:43
  • $\begingroup$ But it keeps saying that they are wrong... $\endgroup$ – John Dec 9 '16 at 1:46
  • $\begingroup$ What is ‘it’?$%$ $\endgroup$ – Jan Dec 9 '16 at 1:54
  • $\begingroup$ The app I'm doing the problem on $\endgroup$ – John Dec 9 '16 at 1:56
  • $\begingroup$ All I can advise you to do in this case is submit a bug report. $\endgroup$ – Jan Dec 9 '16 at 1:57

I found the answer which I'm assuming was just getting rid of an unnecessary spectator ion:

SCN-(aq) + [Fe(H2O)6]3+(aq) -> [Fe(H2O)5(SCN)]2+(aq) + H2O(l)

  • 1
    $\begingroup$ Sounds more like a technicality than an actual problem with your equation. $\endgroup$ – ringo Dec 9 '16 at 3:57
  • $\begingroup$ True but the program only counted this answer as correct $\endgroup$ – John Dec 9 '16 at 3:58

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