All Questions
Tagged with acid-base inorganic-chemistry
438
questions
3
votes
1
answer
2k
views
Reaction between concentrated sulfuric acid and sodium bromide
What are the products of the reaction between sodium bromide and concentrated sulfuric acid?
I did the question like this:
$$
\begin{align}
\ce{2Br- &-> Br2 + 2e-} \tag{R1.1} \\
\ce{SO4^2- 4H+ ...
- 27
1
vote
1
answer
442
views
Why is sodium bisulfate acidic? [closed]
So, as I know, the rule says that if you get a salt from strong acid and strong base it should be neutral. In this situation with sodium bisulfate and also trisodium phosphate we get an acid salt, ...
- 23
-2
votes
2
answers
234
views
How can boric acid forms pyroboric acid if it is a monobasic acid?
Pyro acids are prepared by removing one water molecule from two molecules of oxyacid. $\ce{H3BO3}$ has only one acidic hydrogen so two of that molecule will have two acidic hydrogens. If we remove ...
7
votes
3
answers
3k
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Why do diluted sulfuric acid and hydrogen peroxide etch copper only when chloride ions are present?
I've mixed 30 ml 10% sulfuric acid with 20 ml 3% hydrogen peroxide and put a drop of this solution onto copper foil. The solution quickly removed the oxide layer from the copper but did not dissolve ...
- 191
0
votes
0
answers
160
views
Pcb etching safety questions (HCl, H2O2, H3PO4)
I am about to embark on a pcb etching journey, however, I am not sure what safety precautions I should take when handling the products. I know that the reagents should be stored in their original, ...
- 17
-4
votes
1
answer
1k
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Can 5% sulfuric acid and 3% hydrogen peroxide form piranha solution?
I'd like to use 5% sulfuric acid and 3% hydrogen peroxide as an etching solution for copper. (In the past I've used dilute hydrochloric acid and hydrogen peroxide but the generation of chlorine gas ...
- 191
0
votes
1
answer
151
views
Problem understanding the rate of reaction of reversible reactions
Case 1:
$$\ce{CH_3COOH + NaOH<=>CH_3COONa + H_2O}$$
At equilibrium, there remain extremely small concentrations of the reactants (acetic acid and sodium hydroxide), and comparatively large ...
- 23
3
votes
1
answer
180
views
Reaction between hydrobromic acid and sodium borate
Write the reaction for a a sodium borate solution being titrated by hydrobromic acid, assuming sodium borate is represented by $\ce{Na3BO3(aq)}$.
I think this is a simple double replacement reaction:
...
- 167
-2
votes
1
answer
54
views
Is my understanding of conjugate acid-base pairs correct? [closed]
$$\ce{HCl_{(aq)} + H_2O_{(l)}<=>H_3O^{+}_{(aq)} +Cl^{-}_{(aq)}}$$
Cl- is the conjugate base of HCl. Now, can I say that HCl is the conjugate acid of Cl-?
- 23
1
vote
1
answer
1k
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Does fluoroantimonic acid dissolve noble metals?
Hello,Does fluoroantimonic acid dissolve noble metals? Nernst equation suggests that platinum would require pH ≈ −20.1 to be dissolved, using Hammett acidity function as an extension of pH ...
- 83
0
votes
2
answers
194
views
What might cause overestimated measured pH value of sodium hydroxide solution pumped with carbon dioxide?
I tried an experiment at home where I had a $\ce{CO2}$ tank pumping $\ce{CO2}$ into a solution of $\pu{28 g}$ sodium hydroxide in $\pu{200 ml}$ water. The initial $\mathrm{pH}$ was $11.24.$
I expected ...
- 59
1
vote
2
answers
338
views
Effect of H+ concentration on equilibria
Considering the two equilibriums below, when the $[\ce{H+}]$ decreases, my book says that equilibrium \eqref{rxn:2} will shift to the left by a greater extent compared to equilibrium \eqref{rxn:1} ...
- 242
-1
votes
1
answer
1k
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Fundamentally, what is the difference between redox and acid-base reactions?
For example, consider:
$$\ce{NH3 + H2O -> NH4+ + OH-}$$
Here, the $\ce{NH3}$ is acting as a base (By Lewis theory, it is an electron pair donor).
Why don't we consider this to be a redox (there is ...
- 51
-2
votes
2
answers
891
views
Isn't hydrogen chloride a salt, because it is an ionic compound? [closed]
So I just learned in chemistry that salts are ionic compounds.
Shouldn't,
$\ce{H+Cl-}$ be a salt since hydrogen ion has positive charge and chloride ion has negative charge? If $\ce{HCl}$ is a salt ...
2
votes
1
answer
442
views
Ferrous chloride solution coming out purple rather than green?
I've got some steel wool in hydrochloric acid to attempt to make ferrous chloride and the whole solution has turned purple. From everything I've seen it's supposed to be green. I have no idea what's ...
- 31