Questions regarding the chemical properties of hydrogen and its behavior in reactions and compounds.
3
votes
1answer
121 views
If electrolysis splits water, why does only either hydrogen or oxygen (but not both) bubble up on one pole?
If electrolysis splits water, then that means that $\ce{H2O}$ is split into $\ce{H}$ and $\ce{OH}$ or $\ce{O}$.
How come that if a water molecule is split at e.g. the negative pole (anode), only the ...
0
votes
2answers
40 views
How to find the molecular weight of a given gas?
It's given that the density of a gas(X) is 10 times that of hydrogen. In that case, what is the molecular weight of gas X?
Well what I've done up to now is this:
...
2
votes
1answer
133 views
Delta G for Standard Hydrogen Electrode reaction
I'm dealing with electrochemistry problems.
For the following reaction
$$2H^+ + 2e^- \leftrightarrow H_2 \ \ \ \ \ \ \ E^o= 0 \ V$$
Does it make sense to say
$$\Delta G^o=-nFE^o = 0 $$
Which would ...
1
vote
2answers
64 views
Palladium hydride forming water and heat at room temperature
I just read that saturated palladium hydride, $\ce{PdH}$0.7, when exposed to oxygen will generate heat and water on it's surface, $\ce{4 H}$(Pd) $\ce{+O2}$(g) $\ce{\to 2 H2O}$(g, l).
What is going ...
2
votes
1answer
83 views
Hund's rule & different $H_2$ molecules
Does Hund's rule allow both of the following scenarios?
Filling each orbital with a single electron, so that a sub-shell, at first, only electrons with a negative spin
Filling each orbital with a ...
14
votes
1answer
171 views
How does Palladium dissociate H₂ so easily?
If I understand correctly, H2 in the presence of Pd readily dissociates as it dissolves into the metal. With the dissociation energy for the H—H bond being so large, how is this possible?
At first I ...
4
votes
2answers
665 views
Why does the hydroxide ion have a negative charge?
I've been studying the roles of hydroxide & hydronium in acids and bases, and it was mentioned that a hydroxide ion (OH-) has a negative charge. Can someone give me a layman's explanation of what ...
1
vote
1answer
363 views
Samsung's S-Plasma Ion - scientific basis
Has anyone come across a scientific study of the S-Plasma Ions that Samsung claims will purify air from microbes, allergens and free radicals? I would prefer publicly available research findings.
The ...
6
votes
1answer
131 views
Are there any examples of nuclear spin isomers having consequences for chemical reactivity?
Ortho- and parahydrogen are two forms of the $\ce{H2}$ molecule that are distinguished by their pairing or antipairing of nuclear spins, giving rise to metastable singlet (ortho-) and triplet (para-) ...
7
votes
2answers
241 views
Why is slush hydrogen at the triple point?
Slush hydrogen is a mixture of liquid and solid hydrogen at the triple point considered as a possible vehicle fuel. What is the need of having it at the triple point? Couldn't any other set of ...
9
votes
1answer
160 views
Why are there two Hydrogen atoms on some periodic tables?
Most periodic tables only feature one Hydrogen atom, on the top of the first group. But some, like the one I was given, also show Hydrogen in the 7th group, to left of Helium.
Why are there two ...
