J5. Complete Ionic Equations

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Abigail Urbina 1K
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J5. Complete Ionic Equations

Postby Abigail Urbina 1K » Sun Dec 03, 2017 11:53 pm

As I was working through some of the problems in Fundamentals J of the textbook, I was doing some questions involving writing out the complete and net ionic equations of particular reactions.

When writing out ionic equations, how do we know when exactly to split up a molecule into its particular atoms with their charges?

For example, in J5 part a, why is HF not split into H+ and F- in the complete ionic equation for its particular reaction with NaOH? The solution manual keeps it as molecule HF in the complete and net ionic equation.

Yashaswi Dis 1K
Posts: 56
Joined: Fri Sep 29, 2017 7:04 am

Re: J5. Complete Ionic Equations

Postby Yashaswi Dis 1K » Mon Dec 04, 2017 2:58 am

Hi,

So generally weak acids or weak bases when they are mixed with water, they don't dissociate all their protons and that's why we write them as molecules instead of separating them like we do for Ca(OH)2 for example. HF is a weak acid so we leave it, we don't need to separate it. Hope that helps!

-Yashwi


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