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Chemistry

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    $\begingroup$ @uhoh I'd ask the definition of a salt, if $\ce{NH3}$ or any of the $\ce{NH_4X}$'s don't fit the bill... $\endgroup$
    – Stian
    Commented May 5, 2019 at 8:16
  • $\begingroup$ @StianYttervik I'm just going by what the author says in the first sentence: "...although it is not a salt by definition." If you feel that it can be a salt, then that would be great! If so, perhaps you can propose an edit to adjust the wording? $\endgroup$
    – uhoh
    Commented May 5, 2019 at 10:00
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    $\begingroup$ @MathewMahindaratne Excellent, thank you for that! I've made a formatting change to start a new paragraph to improve the visibility. $\endgroup$
    – uhoh
    Commented May 5, 2019 at 10:24
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    $\begingroup$ Ixnay on the ammonium fluoride calculation. Solutions, especially of ionic compounds, are far from ideal when they are as concentrated as quoted in the edit; therefore the linear dependence of freezing point depression on on concentration does not apply. $\endgroup$
    – Oscar Lanzi
    Commented May 5, 2019 at 14:32
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    $\begingroup$ @Oscar Lanzi: I agree. It is an important point. Similar to Beer's law. That's why I stated as "theoretically"! :-) Also, thank you uhoh for the edit. $\endgroup$
    – Mathew Mahindaratne
    Commented May 5, 2019 at 16:24