# All Questions

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### Why are carbocations with sp3 hybridisation highly unstable? [duplicate]

Why is it that sp3 hybridized carbonium ions do not exist? Or why are they very difficult to form? For instance, nucleophilic substitution in bicyclo compounds at the bridge head carbon is not very ...
3k views

### Best consumption-safe liquid for caffeine solubility?

The question is simple: What human-consumption safe liquid has the best caffeine solubility? It's 200mg/10mL of water. That's a lot of water for one dose! I found some ramblings on a fourm stating ...
115 views

620 views

### Wasn't Rutherford's assumption of gold foil to be made of single layer wrong?

My teacher taught about Rutherford's gold foil experiment today. Sir said that, Rutherford used gold foil of thickness $10^{-7}$ m and concluded atom to be of size $10^{-10}$ m. Sir also said that ...
11k views

### Why is Potassium in French and English not called Kalium?

The symbol from the periodic table for Potassium is "K". This fits my native language (dutch), where Potassium is called "Kalium". The same question applies to Sodium (Na), which again in Dutch is ...
105 views

### Isoelectric point pH, mV, for a metal oxide nanopowder

I'm trying to make a solution of $\ce{TiO2}$ that will coat stuff in as dense a monolayer as possible. To do so, I'm using nano sized $\ce{TiO}$ particles and trying to get them to get as close to ...
2k views

### Corrosion of Aluminum by Baking soda

An aqueous solution of sodium hydrogen carbonate corrodes aluminum foil quite readily. How do you explain this?
10k views

### Making ice from carbonated water

Sorry if this is not the place for asking this question, but I'm going to do a real life project and don't know where else to ask. I'm going to prepare and sell snow cones next summer. For making ...
27k views

### Ozonolysis conditions for benzene

What are the precise conditions under which benzene undergoes ozonolysis? All anyone can tell me is that it undergoes ozonolysis under "vigorous" conditions. But, what vigorous conditions?
5k views

### What is the edge of a diamond like?

The chemical structure of a diamond is defined as an endless lattice in which each carbon atom is covalently bonded to four other carbon atoms situated at the four ends of a tetrahedron. But of ...
6k views

### Selectivity in aldol condensation between pivaldehyde and acetone

In a crossed aldol condensation (condensation between aldehyde and a ketone), the primary products are such, that the carbonyl group of the ketone remains intact, and the $\alpha$-hydrogen of ketone ...
784 views

### What is the reason behind the characteristic colors of elements?

I've been trying to find out about this for some time now and when I searched online, I couldn't get any solid reasons. My question is: What is the reason for the characteristic colors of elements? ...
61k views

### Isothermal vs. adiabatic compression of gas in terms of required energy

I am working on an instruction manual of sorts to be used with an introductory course in thermodynamics. As an example of problem solving, I attempt to answer the following question: If you have ...
670 views

### If I add some KOH, where will the reaction shifts?

I just got a final test and one of the question is: $\ce {Ni^2+}$ + 6$\ce{NH_3}$ $\ce {<=>}$ $\ce{[Ni(NH3)6]^2+}$ If we add some aqueous $\ce{KOH}$ after the reaction reach equilibrium, where ...