All Questions
7
questions
1
vote
1
answer
210
views
Acid etching of float glass
While we have done some etching of glass with hydrofluoric acid alone, to achieve a matte white finish on float glass, I am curious to know what formula and procedure is required to create a more ...
- 11
3
votes
2
answers
4k
views
Group 15... Lewis Acid, Lewis Base or Not At All?
I am a long-time reader of this forum, but this is my first time post. I am a chemistry undergrad with a question about Lewis acidity or basicity of Group 15 compounds.
I know Lewis acids act as an ...
4
votes
0
answers
3k
views
Titanium in HF vs HCl
So we tried the reaction between Titanium metal with hydrochloric acid and hydrofluoric acid at a similar concentration. While boiling temperatures and constant heat over a long period of time are ...
- 4,322
9
votes
1
answer
10k
views
Order of Basicity of Nitrogen Trihalides
I was asked to arrange nitrogen tri-halides in order of increasing basicity. On looking up the answer online, it turned out to be the following: $\ce{NF3}$ < $\ce{NCl3}$ < $\ce{NBr3}$ < $\ce{...
- 101
2
votes
0
answers
109
views
Why do reactions of sodium halides with sulfuric acid produce sodium hydrogen sulfate instead of sodium sulfate?
In the reaction of sodium halides with sulfuric acid, sodium hydrogen sulfate is produced \eqref{NaHSO4}. Why would this be produced instead of sodium sulfate \eqref{Na2SO4}?
\begin{align}
\ce{NaX + ...
- 21
12
votes
1
answer
2k
views
Hydrogen halide acidity
Why is it that
$$\mathrm{p}K_\mathrm{a}(\ce{HF}) < \mathrm{p}K_\mathrm{a}(\ce{HCl}) < \mathrm{p}K_\mathrm{a}(\ce{HBr}) < \mathrm{p}K_\mathrm{a}(\ce{HI}),$$
even though the electronegativity ...
- 6,233
8
votes
1
answer
6k
views
Why do sodium halides react so differently with sulfuric acid?
Why do sodium halides react so differently with sulfuric acid?
\begin{align}
\ce{NaF + H2SO4 &-> NaHSO4 + HF}
\tag{1a}\label{NaF}\\
\ce{NaCl + H2SO4 &-> NaHSO4 + HCl}
\tag{...
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