Chlorine (bleach) and alcohol (ethanol?).

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Discussion Overview

The discussion revolves around the chemical reaction between chlorine (or hypochlorite) and alcohol, specifically focusing on the potential products and mechanisms involved. Participants explore the nature of the reactants, the oxidation states, and the implications of using different forms of chlorine, such as household bleach versus concentrated hypochlorite compounds.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the reaction between chlorine and alcohol and requests a chemical equation.
  • Another participant suggests that hypochlorite oxidizes alcohol, producing carboxylic acid and chlorine gas.
  • A different participant challenges the previous claim, stating that if chlorine is present in the products, oxidation has not occurred.
  • It is noted that chlorine has an oxidation state of +1 before the reaction and 0 afterwards, indicating that chlorine gains an electron and thus oxidizes another substance.
  • Some participants clarify that the original question mentioned chlorine, not hypochlorite, which leads to further discussion about the specific reactants involved.
  • One participant speculates that the videos referred to household bleach, which contains hypochlorite.
  • Another participant suggests that calcium hypochlorite tablets or granules, which are more concentrated than household bleach, may have been used, and discusses the autocatalytic nature of the reaction when heated.
  • A suggestion is made to review the "Haloform Reaction" for more information on the mechanism or products produced.

Areas of Agreement / Disagreement

Participants express differing views on the specific reactants involved (chlorine vs. hypochlorite) and the nature of the reaction products, indicating that multiple competing views remain without a consensus on the exact details of the reaction.

Contextual Notes

There is uncertainty regarding the specific form of chlorine being referenced (chlorine gas vs. hypochlorite) and the conditions under which the reaction occurs, including the role of heat and the concentration of the reactants.

APeterson
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I recently saw a few videos on Youtube of people making a reaction by putting chlorine and alcohol together in a bottle. For the life of me I can't figure out why that reaction would work, and I wondered if anybody could give me an equation. Thanks.
 
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I'm guessing that hypochlorite oxidizes alcohol yielding carboxylic acid and chlorine gas.
 
qalomel said:
I'm guessing that hypochlorite oxidizes alcohol yielding carboxylic acid and chlorine gas.

If there is chlorine in products there was no oxidation.
 
Chlorine had an oxidation state of +1 before the reaction. Afterwards, it is 0. Chlorine gains an electron in the reaction and thus it oxidizes something.
 
Original question called for the presence of chlorine, not hypochlorite.
 
I was guessing that the original question (and the Youtube videos) referred to chlorine as household bleach.
 
And it is quite possible you were right, I was just nitpicking :-p
 
Hmm. Thanks guys. I don't know if it was bleach or not, but I'm pretty confident it wasn't plain old Cl2. ;)
 
I believe it was calcium hypochlorite tablets or granules. Pretty concentrated hypochlorite. Household bleach is only about 5-6% hypochlorite in solution. The tablets are something like 70% active chlorine so they are a lot more reactive than bleach when heated. The heat is the thing that releases the chlorine rapidly. Once the reaction starts, the tablets heat up, decompose, produce lots of heat and gaseous products (like chlorine). It's autocatalytic with respect to heat and the decomposition product, chlorine, is quite reactive with hot isopropanol.

Edit: If you are interested in the mechanism or products produced, review "Haloform Reaction". Great Google term.
 
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