Questions tagged [inorganic-chemistry]
Inorganic compounds generally do not have C-H bonds, while organic compounds do have such bonds. The distinction between inorganic and organic chemistry, however, is far from absolute.
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Ionic radii of the first row d-block elements
From these figures:
I could not think of any explanation for the question why Cr2+ radius is larger than that of V2+ while the atomic radius of chromium is smaller than vanadium.
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Percentage Yield
For the above MCQ question, I took the equation to be
$$\ce{CaC2 + 2H2O -> C2H2 + Ca(OH)2}$$
I then calculated the moles of $\ce{CaC2}$ as 0.7273 moles, which has a 1:1 molar ratio to $\ce{C2H2}$, ...
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What's the best way to recover silver from industrial and medical x-ray film? [closed]
I washed industrial and medical x-ray film with lye and tap water. Can I add bleach to draw the silver out of the lye or would I just add salt water to get AgCl, then siphon off the excess water and ...
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Type of British porcelain invented around 1917-1918
Being subscribed already for 30 years on Scientific American, I recently downloaded the whole archive, and I am now going through 1914-1918.
In the 26 January 1918 issue, on page 95, there is a small ...
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How does a conc. electrolyte solution extract water from a organic phase like diethyl ether or ethyl acetate?
In organic chemistry, often, during the last steps of a workup we use concentrated brine solution (NaCl) to "extract" the water from the organic layer, especially when we have an organic ...
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Melting point of sulfur
The melting point (m.p.) of rhombic sulfur is 385.8 K while the m.p. for monoclinic sulfur is 392 K. Also, the transition temperature of rhombic to monoclinic sulfur is 369 K.
Now, consider heating ...
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Determining an unknown E° from two similar half ox/redox reactions
Use the oxidation half-cell and reduction half-cell, $\ce{Cr^3+/Cr^2+} = \pu{0.424 V}$ and $\ce{Cr^3+/Cr2O7^2-} = \pu{1.32 V}$, to determine the $E^\circ$ for $\ce{Cr2O7^2-/Cr^2+}$:
a. $\pu{-1.75 V}$
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Is arsenic pentasulfide soluble in 50% nitric acid or in hot dilute nitric acid?
I am aware that arsenic pentasulfide is soluble in hot concentrated nitric acid giving arsenic acid ($\ce{H3AsO4}$) + nitric oxide + sulfur, but am not sure whether it is soluble in 50% nitric acid or ...
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Salts solubility and speciation calculations using PHREEQC
I am collecting data from literature for CO2 solubility in aqueous solutions. These are usually synthetic brines and are reported as molalities or wt% of salts or salt mixtures (I have NaCl, KCl, ...
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Why is a C=C weaker than a C=N and even weaker than a C=O when C-C is stronger than C-N and C-O?
Why is a C=C bond weaker than a C=N and even weaker than C=O ? In terms of orbital overlap it doesn't make sense, since there is a difference in energy between the orbitals which lower the interaction ...
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Paramagnetism in coordination complexes
A complex is classified as paramagnetic or diamagnetic based on the electronic configuration of the central atom/ion. Should the properties (para/dia) of surrounding ligands also affect the nature of ...
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How does Hexaaquanickel(II) show color
I have studied that there must be unpaired electrons in $t_2g$ orbitals so that they can make transition to the eg orbital by absorbing energy from light. But in $\ce{[Ni(H2O)6]^2+}$ $\ce{Ni^2+}$ has $...
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Why is phosphoric acid a weak acid?
What is the reason for the phosphoric acid $\ce{H3PO4}$ being a weak acid despite having a structure similar to that of sulfuric acid $\ce{H2SO4}?$
I found some sources claiming that the resonance of ...
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Are there ionic compounds that dissolve in water but do not dissasociate into their ions?
I would assume such a molecule would be possible because polar ionic compounds have a partial charge that can help them dissolve in water yet not disassociate into their ion parts, but I am not sure.
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Are London dispersion forces in xenon tetrafluoride strong enough to make it a solid?
Xenon_tetrafluoride ($\ce{XeF4}$) is a well-known square-planar molecule with no dipole moment. Molecules are thus have to be bound to each other by London dispersion forces (LDF) which are known to ...
