Post a New Question

chemistry

posted by .

Write a net ionic equation for the reaction of the aqueous species ammonia and hydrofluoric acid.

I don't think mine is coming out right- I don't know how NH3 reacts with other species, because I end up getting hydrogen as both an anion and a cation in the same species.

NH3(aq) is NH3 + HOH ==> NH4^+ + OH^-
HF ==> H^+ + F^-
NH4F is soluble in water.

So if NH4F is soluble in water, would the net ionic equation be
H+ + OH- --> H2O?

Or would the net ionic equation deal with the NH4F?

I didn't indicate above that HF is a weak acid but it is.
I have never seen an equation like this before. Check my thinking.
NH3(aq) is NH3 + HOH ==> NH4^+ + OH^-
and if we were trying to be exact we would write NH4^+(aq) + OH^-(aq).
NH3 + HOH + HF ==> NH4^+ + OH^- + H^+ + F^-
NH3 + HOH + HF ==> NH4^+ + HOH + F^-
but HOH cancels on each side. Since the problem specifically states aqueous ammonis, then I think the following is reasonable.
NH3(aq) + HF ==> NH4^+(aq) + F^-(aq)
The problem is that I don't know how your prof counts an aqueous solution of NH3. It is ammonia gas dissolved in water and it is a weak base which dissociates slightly into NH4^+ and OH^- but there is a good deal of NH3 remaining undissociated. In addition, do we show the HF dissolving in the solution, too, and writing it as HF(aq). I don't know. But I think what I have written above is reasonable. The prof may simply be looking for
NH3(aq) + HF ==> NH4^+(aq) + F^-(aq) with the possible addition of HF(aq) replacing HF.

I am a little uncomfortable with the answer I wrote above BECAUSE, most of the NH3 stays in the form of NH3 and most of the HF stays in the form of HF; therefore, the molecular species far out number the ionic ones. In such cases we usually defer to the molecular form. However, writing "no reaction" just doesn't seem appropriate. I hope I haven't completely confused you.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. college chem

    Two questions where I have to write a balanced net ionic equation. 1. Write a balanced net ionic equation for the reaction that occurs when aqueous solutions of sodium chromate and silver nitrate are mixed 2. Write a balanced net ionic …
  2. Chemistry

    I am having a bit of difficulty getting the net equation and the net ionic equation and the net ionic equation. I think I have the balance equation right. Thanks in advance for any help. For the acid base neutralization reaction of …
  3. Chemistry

    1. The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrofluoric acid. F2(g) + NH3(g) „³ N2F4(g) + HF(g) a. If you have 66.5g NH3, how many grams of F2 are required for complete reaction?
  4. chemistry

    Aqueous solutions of iron (III) sulphate and barium hydroxide are combined. Does a precipitate form?
  5. chemistry

    are this 2 equations the same NIE? and if not how come?
  6. Chemistry

    Consider the reaction in aqueous solution: 6 HCl + 2 KMnO4 + 5 H2O2 ---> 5 O2 + 2 MnCl2 + 2 KCl + 8 H2O 1.) Write the total ionic equation. 2.) Write the net ionic equation. 3.) For each species (molecule or ion) in the net ionic …
  7. CHEMISTRY

    Write the formulas for the following substances as they would appear in a total ionic equation: a) Aqueous acetic acid b) solid lithium carbonate c) Aqueous ammonia d) Aqueous sodium dihydrogen phosphate I don't know, do we have to …
  8. Chemistry

    in an experiment, ammonia gas, NH3(g) was bubbled through distilled water. Some of the dissolved ammonia gas, NH3, reacted with the water to form the aqueous ammonia ions, NH4. When red litmus paper was placed in contact with the aqueous …
  9. Chemistry

    Given the reactant side of the total ionic equation for the neutralization reaction of ammonium hydroxide (NH4OH) with hydrochloric acid (HCl), write the total ionic equation (also known as the complete ionic equation) by entering …
  10. Science

    2. Study the amino acid sequences of the same protein taken from four different species of plants. Which pair of plants is most closely related?

More Similar Questions

Post a New Question