All Questions
5
questions
3
votes
0
answers
475
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Shielding vs electron-electron repulsion
Example of shielding:
(source)
The last electron in the 6s subshell of $\ce {Cs}$ is shielded from the nucleus by the inner electrons.
Example of electron-electron repulsion:
The electron affinity of ...
user119245
-1
votes
1
answer
134
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Can use lead(II) oxide instead of lead(IV) oxide in car battery?
Question: If the discharge input equation $\ce{PbO2}$ is replaced by $\ce{PbO}$, will the battery still work? I think the product will not be water anymore but hydrogen gas. I am asking this question ...
- 11
1
vote
2
answers
660
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How come we can't use the equivalence point equation of NV=NV in this problem?
So, the problem is you prepare to standardize a $\ce{Na2S2O3}$ solution. $\pu{32 mL}$ of $\ce{Na2S2O3}$ solution is titrated into $\pu{50 mL}$ of a $\pu{0.01 M} \ \ce{KIO3}$ solution to reach the ...
- 27
7
votes
4
answers
3k
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How can a neutral atom attract electrons when it's supposed to have zero charge?
A neutral atom is an atom with an equal number of protons and electrons
We know the force of attraction between the proton and electron is equal
and assuming that:
one proton's positive charge ...
- 639
7
votes
1
answer
392
views
Prediction of ionic reduction?
Here are some standard electrode potentials:-
$$\ce{SO_4^{2-} + 4H^+ + 2e^- -> SO_2 + 2H_2O}\\E^o=0.17\mathrm{V}\\
\ce{NO_3^- + 4H^+ + 3e^- -> NO + 2H_2O}\\E^o=0.97\mathrm{V}\\
\ce{NO_3^- + ...
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