What is the chemical equation for the reaction between propa

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What is the chemical equation for the reaction between propa

Postby chikis on July 22nd, 2014, 4:45 pm 

What is the chemical equation for the reaction between propanoic acid and sodium?
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Re: What is the chemical equation for the reaction between p

Postby neuro on July 22nd, 2014, 5:18 pm 

I'm no chemist,
but I would be surprised if sodium, in solution, cared about binding to propanoic acid, apart from occasionally substituting for a lost proton at high pH...
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Re: What is the chemical equation for the reaction between p

Postby Natural ChemE on July 22nd, 2014, 5:28 pm 

chikis,

Under what conditions?

It could be a violent reaction if we're talking pure sodium mixed with aqueous propanoic acid:

-Sodium in Water, sciencefix, YouTube

Or, as neuro said, it could be boring if we're talking sodium cations, , mixed with dilute aqueous propanoic acid.
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Re: What is the chemical equation for the reaction between p

Postby chikis on July 22nd, 2014, 6:53 pm 

Am only asking of the chemical equation.
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Re: What is the chemical equation for the reaction between p

Postby Natural ChemE on July 23rd, 2014, 7:57 pm 

chikis,

neuro's answer was correct; I just like the whole alkali-metal-in-water-causes-fireworks thing.

For equations, first propanoic acid would lose its most acidic proton, producing a free proton, , and propanoate, . So:
  • .
Since propanoate's an anion (negatively charged ion), it's free to associate with an cation (positively charged ion) to produce a salt (cation-anion complex). So:
  • .
As neuro said, there probably wouldn't be much propanoate salt at equilibrium unless the pH was really high (basic solution; not many free protons for the sodium cations to compete with).
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Re: What is the chemical equation for the reaction between p

Postby chikis on July 23rd, 2014, 9:30 pm 

Are you saying the reaction is not feasible?
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Re: What is the chemical equation for the reaction between p

Postby Natural ChemE on July 23rd, 2014, 10:12 pm 

chikis,

The reaction'll happen; just the product won't be favored, like water's dissociation.
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Re: What is the chemical equation for the reaction between p

Postby redwhitechem on June 10th, 2016, 6:53 am 

Sodium propanoate is C3H5NaO2 and Propanoic Acid is C3H6O2, so the organic equation is HC3H5O3 <----> H+ +C3H5O3
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