All Questions
6
questions
-3
votes
1
answer
148
views
Side reaction of I− and acidity of HI
In acidic conditions, I− tends to get oxidised by atmospheric oxygen to give iodine. This is evident in iodine based titration, where upon leaving the setup, blue colour of starch reappears as iodine ...
- 155
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
vote
0
answers
141
views
What makes concentrated aqueous solutions of aluminium nitrate and aluminium chloride suitable to dissolve noble metals, specifically gold? [closed]
Aluminium nitrate is a strong oxidising agent and aluminium chloride acts as a Lewis acid. Also these solutions are claimed to have the abilities of aqua regia and therefore can dissolve noble metals.
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- 11
1
vote
1
answer
3k
views
Can an iodine clock reaction work without using a strong acid?
I'm going to do an iodine clock reaction for a project and we had to submit the materials and safety sheets for the experiment a while ago. I thought I could do one by using hydrogen peroxide, sodium ...
- 11
6
votes
2
answers
1k
views
Balancing complex haloform redox reaction
I just completed a haloform reaction experiment, using acetophenone and sodium hypochlorite to form benzoic acid and chloroform.
My lab report has a question regarding balancing the equation of the ...
- 61
0
votes
1
answer
262
views
How to calculate the concentration of lead(II) liberated from lead(IV) oxide under acidic conditions? [closed]
What is the concentration of $\ce{Pb^2+}$ in a lake that has a pH of $6.0$ and is in equilibrium with $\ce{PbO2(s)}$ and atmospheric oxygen?
\begin{align}
\ce{PbO2(s) + 4H+ + 2e- &-> Pb^2+ + ...
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