# All Questions

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### Connection between Gibs free enrgy and Solubility

My text book says that despite the sign ,if the magnitude of the gibs free energy we calculated Increases ,the solubility will descrese.Can you please explain this?
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### How could benzenehexol be reduced to benzene?

How could benzenehexol (hexahydroxybenzene) be reduced to benzene? Could an active metal like potassium remove the oxygen?
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### Iodine exception

The state of a substance depends on the intermolecular bonds between the molecules of the substance.The stronger the intermolecular bonds , the harder the substance becomes a gas. Iodine molecules ...
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### Using molecular orbital for determining leaving group trend and nucleophilicity

Here is the question. Which one has better leaving group, cyclohexanol or cyclohexane that has $\ce{OH_{2}^{+}}$ substituent? Explain. I know the answer is the latter because if both compounds are ...
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### Minimize ozone generation while generating negative ions of air? [on hold]

Consumer air ionizers do this; I'm looking to build something larger, but I still need to keep ozone generation at the smallest minimum possible. What is the method? A precise voltage to the ...
19 views

### why is there a net current at halfwave potential?

Im wondering why there is a current measured at a halfwave potential? According to my understanding at the halfwave potential of a diffusion controlled reduction or oxiation at an electrode, there is ...
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### What is the definition “Moist Chlorides” [on hold]

I am currently evaluating material suitability for a project. When looking at some suppliers technical data sheets there is a distinction of sea water, brackish water, and then there is sometimes a "...
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### Sodium Chloride solution question [on hold]

What is the mass of sodium chloride used to create a 100 mL solution at a concentration of 1.5 M? Please provide any of the work done to solve the problem as well.
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### Ionic Equilibria [on hold]

Grape juice has a pH of 3.75. Grape juice can be titrated with standard alkali. A 25.0 cm³ sample of grape juice was exactly neutralised by 27.5 cm³ of 0.100 mol dm^-3 sodium hydroxide using ...
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### Which compound can be purified by forming a hot aqueous solution that recrystallises on cooling? [on hold]

A. Cyclohexene B. Ethanoic acid C. Phenylamine D. Benzoic acid I thought it was C but it’s wrong. What’s the correct answer and why?
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### Will Proving or Disproving of any of the following have effects on Chemistry in general?

I am working on a project relating to- https://en.wikipedia.org/wiki/Millennium_Prize_Problems I wanted to list the effects of them being proved or disproved in different aspects of science and maths....
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### eV and redox potential

I am trying to estimate the redox potential of an excited state as described in this reference. The paper says: The reduction potentials associated with the excited states cannot be directly ...
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### How do chemical signals store information? [on hold]

How exactly do chemical signals store & transmit information , eg. How do the chemical reactions in the eye paint a picture ? There must be information stored in the signals that tell the brain ...
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### Why would you measure pH before and after a reaction between magnesium and hydrochloric acid? [on hold]

I don't get why? Is it to check if it's safe?
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### Can I reverse an iron redox reaction with potassium hydroxide and electricity?

For a school project, about clean energy, me and my team are trying to build an iron battery. We are using a piece of iron (anode), potassium hydroxide (electrolyte), carbon electrode (cathode) ...