Questions tagged [hydrogen]
Questions regarding the chemical properties of hydrogen and its behavior in reactions and compounds.
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Smell produced in reaction of sodium hydroxide and aluminium
I was doing an experiment with $\ce{NaOH}$ dissolved in some $\ce{H2O}$ and aluminium. My textbook says that the following reaction takes place
$$\ce{2 NaOH + 2 H2O + 2 Al -> 2 NaAlO2 + 3 H2}$$
It ...
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Nanoscale hydrogen batteries that use water-splitting technology
It was claimed in this article in 2019 that a nano-battery using water splitting technology is developed. It is described as:
The battery gains its charge by interacting with water molecules present ...
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atomic structure - why only hydrogen be separately written in periodic table [duplicate]
The other
exception is hydrogen. It has only one
s-electron and hence can be placed in group 1
(alkali metals). It can also gain an electron to
achieve a noble gas arrangement and hence it
can behave ...
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water to hydrogen to water [closed]
I'm trying to find out if there is any loss of water when converting water to hydrogen and then back into water and can't find an answer anywhere I've searched. I understand that the water produced is ...
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What is the mass of a proton?
My textbook explains that the deviation from integer atomic mass is caused by mass difference between proton and neutron, which are $1.67262·10^{-27}$ kg and $1.67493 ·10^{-27}$ kg, respectively.
If ...
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Ease of reaction of hydrogen with alkali and alkaline earth metals
The ease of reaction of group 1 metals with hydrogen decreases as we
go down the group.
But why lithium requires high temperature than sodium, potassium and
rubidium?
What is exactly "ease of ...
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Hydrogen atom orbital projections resemble to some Chladni figures! Mathematical reasoning?
Chladni figures are formed by sprinkling salt on a vertically vibrating membrane, f.e. . Some of them are purported to be projections of hydrogen atom orbitals f.e. 1s, 2s, 2p, 3d, e.t.c., f.e.
One ...
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Why are protons more common than hydride ion?
I'm a high school student. I noticed $\ce{H+}$ ion is commonly present in my books while I didn't find any presence of $\ce{H-}$ ions in my books. However, I found on internet that $\ce{H-}$ also ...
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How can 2 molecular orbitals form simultaneously? [duplicate]
I understand (for example in the case of H2) that two s orbitals produce through constructive interference a bonding orbital and that the out of phase combination of two s orbitals leads to ...
user113321
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Cleaning with Hydrogen Peroxide is not a chemical process?
Reading here:
if the peroxide does seem to help is that the bubbles forming and foaming is helping dislodge tiny particles in the cracks of the mineral.
Is this the case in general for cleaning with ...
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Hydrogen concentration measurement without gas chromatography
Please suggest ways to measure $\ce{H2}$ concentration in a sample of gas containing $\ce{HCl},$ $\ce{CH4},$ $\ce{N2},$ $\ce{CO2}$ and trace amounts of chlorosilanes without GC.
The problem is that I ...
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How can a hydrogen atom ever emit an X-ray photon?
From Scientific American, February 2014:
The Proton Radius Puzzle:
...we had to tune the laser so that it came in with exactly the right amount of energy. The atom would make the jump to the higher ...
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Why do poisoned catalysts (Lindlar, nickel borate) result in partial hydrogenation of alkynes?
I read that alkene is more reactive than alkyne, so in hydrogenation of alkynes, it's difficult to isolate the alkenes.
But with poisoned catalysts like Lindlar's catalyst or Nickel-Boron (Ni2B), they ...
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Removing hydrogen bubbles by reacting them away
I have a microfluidics problem where hydrogen is forming tiny (nanometer-scale) bubbles which cause problems. The hydrogen is a reaction byproduct that comes from n etch between silicon and TMAH. The ...
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Can hydrogen peroxide reduce ferric ion to ferrous ion?
I have studied that hydrogen peroxide always oxidizes ferrous ion to ferric ion (source of study : NCERT Chemistry Part II, Textbook for Class XI),
but a question came in IIT JEE 2015 which states:
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