Questions tagged [hydrides]
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12 questions
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How to predict the time for hydride formation after knowing the initial and final concentration of hydrogen into hydride?
I was trying to do time based calculations in terms of predicting the amount of time it will take to form the first hydride ($\ce{LaNi5H6}$) once the hydrogen is pass through the metal($\ce{LaNi5}$), ...
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trying to the solve the equation for the metal hydride hydrogen compression from one of the research paper and understand the unit of the equations
The study of metal hydrides involves the storage of hydrogen in solid-state compounds, which is governed by thermodynamic principles. The Pressure-Concentration-Temperature (PCT) curve is crucial for ...
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Why does LiBH4 reduce esters while NaBH4 does not?
Clayden (pg 531) mentions that LiBH4 reduces esters, while NaBH4 does so, but at a very slow rate. Why?
Ref.: "Organic Chemistry" Second edition Jonathan Clayden Nick Greeves Stuart Warren ...
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Is electronegativity a good argument to explain that bond angle of PH3 is smaller than of NH3? [duplicate]
I can't really understand the argument of my OpenCourseWare professor. She says that the atomic size difference between the two central atoms (P is "bigger" than N) explains the fact that ...
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Are Fajans rules relevant to melting and boiling points of alkali metal hydrides?
Among LiH, NaH, KH, RbH, CsH the one with the highest melting point is LiH, and it keeps on decreasing till CsH. The reason for this in my textbook is that the size of cations keeps on increasing down ...
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Could ammonium azanide exist?
In my first high school chemistry class, I misremembered nitrate as being $\ce{NH2-}$, rather than $\ce{NO3-}$, and wrote down a formula for "ammonium nitrate" that was $\ce{NH4NH2}$ (rather ...
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Is it not possible to prepare LAH using aluminium hydride?
Wikipedia lists this reaction for preparation of lithium aluminium hydride:
$\ce{4 LiH + AlCl_3 -> Li[AlH_4] + 3 LiCl}$
But is it possible to prepare it by reacting aluminium hydride with lithium ...
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Why does AsH3 have a higher boiling point than HBr?
Aside from the general trend of the boiling points of the hydrides, I noticed how the group 15 hydrides somehow "overtook" the group 17 ones in boiling point, which felt weird.
Notably, H-...
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Lithium aluminium hydride
Lithium aluminium hydride is an important reducing agent in organic chemistry.
Since I cannot find the half-equations telling how this reducing agent performs its action, I am wondering, is lithium a ...
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If diborane has 3c-2e bonds, then why are both boron atoms still electron deficit?
This is an image of the structure of diborane.
It has a 3-center-2-electron bridge bond.
As we can see in the bridge bond, the electron in the hydrogen atom and one electron in either boron atom is ...
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Ionic compounds with hydride anion [closed]
Ionic compounds are formed when an atom $\ce{A}$ donates one of it's electron to another atom $\ce{B}$ to form an ionic compound $\ce{A+B-}$. This is significantly more likely to happen as the ...
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Why can't NH5 form?
In ammonia a nitrogen atom forms 3 covalent bonds with hydrogen atoms and has one lone pair which can be used in a dative covalent bond with another hydrogen atom to form an ammonium ion. Instead of ...
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