All Questions

Permanganate ion reacts with bromide ion in basic medium to give manganese dioxide and bromate ion. Write the balanced ionic equation for the reaction. Please balance the equation using the oxidation ...

I am trying to build a mathematical model that represents the curves of a phase diagram. Is there somewhere I can find the data points of the phase diagram of distilled water?

We all could know by now that water can be electrolysed by adding some sulfuric acid.:) But is it possible that the sulfuric acid itself becomes electrolysed when the concentration of the acid in the ...

In this Wikipedia link about the excited states of oxygen, this diagram is shown. The left most molecular orbital diagram is the first excited state of oxygen, and the MO diagram in the middle is the ...

This question is inspired from a previous question(marked unclear). I don't know about the context of that question but I was intrigued by a statement in that question: Superphosphate is used ...

In particular, if I cut a block of stainless steel in half, would the newly formed faces be stainless as well?

Are there other mixtures than piranha solution with similiar or better ability to completely and readily oxidize organic matter? Perhaps peracetic/performic acid?

Is there a decent way to test for solvable manganese in water without purchasing a 150USD test kit? I have a fair chemistry set available (I use it to teach my kids chemistry), and would rather pay ...

I've read about the ideal gas law and the van der Waal's gas law. I know that the ideal gas law is horribly inaccurate for temperatures close to, but above the critical temperatures, so it can only be ...

Typical biogas is comprised of 60% methane and typical natural gas of 85% methane. Typical biogas needs 26 kg/GJ of energy and natural gas needs 54 kg/GJ of energy. I think I can see a relationship ...

10 g of strontium is reacted with 50 mL of 1 M phosphoric acid to form strontium phosphate and hydrogen gas. What molarity of strontium phosphate is formed? Equation of reaction: $$\ce{3 Sr(s) + 2 ...

I read an article by popsci that talked about huge fans forcing methane over a catalyst. Now that got me wondering, can't we produce hydroxyl radicals with powerfull uv lasers blasting the sky, ...

Please help me visualize bond angle! "I mean there are no lines in compounds how we measure angle between such imaginary lines?"asap

For an application I need a commercial, transparent liquid with refractive index n>2, is there this kind of liquid available? On the web only n=1.81 is routine. The second question is, what's the ...

Which form do you think is present at acidic pH, which one in neutral solutions, and which one in alkaline solutions? Briefly justify your answers, based on the availability of protons at different pH ...

Is it safe to boil water in a foil pan on an electric burner? Can the metal leach into the water? I've heard some reports recently about avoiding aluminum foil due to it leaching into food. Photos ...

Which is more basic: oxaziridine or diaziridine? Oxaziridine's got one nitrogen and one oxygen as heteroatoms, while in diaziridine there are both nitrogens.

(Previous related question: Finding mathematically the ground state density in DFT) I am studying the density optimisation procedure (in particular for Orbital-Free DFT) this thesis. The derivative ...

Geometrical isomerism is molecule having same molecular formula, same molecular weight but differ in arrangement of atom/group in 3D space which arises purely because of the "hindered rotation" around ...

According to MOT; A helium molecule cannot exist because the energy lowering of electrons in BMO cancels out with energy increase of electrons in ABMO But then if this is the case(i.e E=0) .Then I ...

If akyl groups are ordered alphabetically and ethyl comes before methyl, would this compound be called 2-ethyl-3,4 dimethyl pentane? Since that would be less than 4-ethyl-2,3 dimethyl pentane, correct?...

I have a mixture of $\ce{Et2O},$ $\ce{EtOH}$ and water, and I want to distill off the ether. I am using a water bath so not much water is distilled over, as the boiling water is 100 °C, and the ...

I'm learning about rate law and equilibrium, and the textbook really hammers in that the exponents for the rate law must be determined experimentally - you can't just use the coefficients from the ...

I would like to cure water glass or sodium silicate. I tried air drying, but the skin that forms seems to prevent the rest of the compound from curing.

In a solution, both $\ce{Pb^2+}$ and $\ce{Zn^2+}$ ion has a molarity of .01 M . In which pH only the $\ce{Pb^2+}$ will precipitate but $\ce{Zn^2+}$ will not do so? The solubility for $\ce{H2S}$ and $...

$\ce{K2MoO_n}$ in an acidified solution is electrolysed, $\pu{0.112 L}$ of oxygen is liberated and $\pu{0.32 g}$ of $\ce{Mo}$ is deposited (Atomic mass = $96$). Find $n.$ Now for this, I calculated ...

In my book, under the topic of redox reactions, it is given, In all redox reactions, the total increase in oxidation number must be equal to the total decrease in oxidation number. Is this a ...

Why do H-1 and H-2 have different ionization energies and radii ? Is this due to the magnetic dipole moment of the neutron in H-2? Source:"Since the mass of a deuteron is about twice that of a proton,...

Can someone explain bonding and anti-bonding molecular orbitals

Get the temperature of the isotherm for water for which the local minimum is at $\pu{100 Pa}.$ Use the values of $a$ and $b$ of water. My approach In the van der Waals equation, set $$\frac{\...

For the first order reaction $\ce{A → B},$ is the change of concentration of $\ce{A}$ equal to the change of concentration of $\ce{B}$? And would this be different if you have $\ce{A → B + C}\,?$

The molecule given below is a substituted cubane. a) How many stereoisomers exist for this molecule? b) How many pairs of enantiomers are possible? How do I calculate the number of ...

I'm high school student. I did a Daniel cell experiment, and I connected several Daniel batteries, but the voltage increase efficiency continued to drop. For example, 1V, 1.8V, 2.5V when 1, 2, 3 are ...

Out of these two, which one is more stable? I'm unable to imagine the orientation of the lone pairs of O and ABMO of C and Cl bond. Any tips to tackle these kind of problems?

Wikipedia article on ortho effect suggests that o-toulic acid is more acidic than benzoic acid. This fact is rationalized by suggesting that steric effect causes COOH group to "twist" out of the plane ...

I have been conducting an experiment for a school project, (removing metals from water)I added 50 grams of sulphate of potash to 2 litres of water, then allowed it to dissolve for a 24hrs. On two ...

I have been trying to read how to fix plastic problems, there seems to be 3 outstanding solutions Re-use Recycle Decompose to Fuel Recycling is expensive, requires lots of water and the quality ...

$\ce{(Ca{,}Co)CO3}$ I have never ever seen this before. What does this mean exactly?

I have learnt that in order for dissolution to occur, the solute-solvent intermolecular forces must be strong enough to overcome the solute-solute and solvent-solvent forces. However if this is the ...

A hydrogen anion has a bigger radius than neutral H . Why is this happening ? I mean both electrons exist at the same shell so this is not it. Both H- and H have 1 proton so this is not it as well . ...

The $C_{18}$ allotrope cyclocarbon has been synthesized and imaged. Science has most details behind a paywall, but this discussion includes an image: In this octakaidecagonal molecule, each $\color{...

In the following Electrophilic (probably substitution) reaction of the compound with chlorine in the presence of Aluminium chloride what should be the product and why? I am not sure about its name ( ...

If I react selenium powder with copper chloride powder above the melting point of selenium (221 °C), will I end up with a chunk of copper selenide, with the chlorine given off as gas, or will I lose ...

I need to prepare black water ink for printers. Is The carbon black powder is the right pigment to create black water ink for printers. What are the specifications of the perfect black carbon powder ...

I understand mathematically that pH lower than that of pKa, acid will be present in undissociated form but can anyone explain it qualitatively (logic) why it is so?

The more thermochemical properties the better, but specific heat/ specific heat capacity is what I am looking for.

The order given in my book is NH3>SbH3>AsH3>PH3 Phosphorous is more electronegative than As and Sb then shouldn't the dipole moment be more in case of PH3 . And why does the anomaly of NH3 occur?

At 18°C the solubility product of Lead(II)Sulphate is given $ 1.8×10^{-8}$. If we mix 40ml $1.5×10^{-4}$ M $\ce{Na2SO4}$ solution into 10ml .001 ml $\ce {Pb(CH3COO)2} $ solution, will Ionic product be ...

I am doing an introductory course to Crystallography and I have found in the following web page: http://pd.chem.ucl.ac.uk/pdnn/symm3/sgmonoc.htm a guide for the elaboration of the diagrams of the ...

A colleague shared an undergraduate level classical gravimetry/titrimetry experiment on determining the stoichiometry of basic copper sulfate. I am looking for a reference for this type of experiment. ...