Does the Reaction of Cl2 and KH Produce KCl and HCl?

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Discussion Overview

The discussion revolves around the chemical reaction between chlorine gas (Cl2) and potassium hydride (KH), specifically whether it produces potassium chloride (KCl) and hydrogen chloride (HCl). Participants explore the nature of the reaction, including the bonding preferences of Cl2 and the characteristics of KH.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants question whether the reaction Cl2 + KH produces KCl and HCl, seeking reasoning behind the reaction.
  • It is noted that KH is pyrophoric in air, suggesting that a violent oxidation reaction with chlorine gas may occur.
  • Clarification is made that HCl refers to the gas form, not hydrochloric acid, indicating that no oxygen is involved in the reaction.
  • One participant provides a link to a compound database, questioning the authenticity of the information regarding HCl and KCl.
  • There is a discussion about oxidizers, with chlorine being identified as a substance that can accept electrons, potentially leading to the formation of Cl- ions.
  • A participant expresses understanding that a reaction between Cl2 and KH is likely to produce HCl and KCl, although this is framed as a possibility rather than a certainty.

Areas of Agreement / Disagreement

Participants express uncertainty regarding the reaction's outcome, with some supporting the idea of a reaction producing KCl and HCl, while others raise questions about the nature of the reaction and the role of KH and Cl2.

Contextual Notes

There are unresolved assumptions regarding the reaction conditions and the definitions of terms used, such as the distinction between HCl gas and hydrochloric acid. The discussion also reflects varying levels of understanding about the chemical properties involved.

Who May Find This Useful

This discussion may be of interest to those studying chemical reactions, particularly in the context of halogen chemistry and the behavior of hydrides.

ProjectFringe
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Does anyone happen to know if Cl2+KH > KCl + HCl?

And if it does, what is the reasoning? Is it because Cl2 prefers an ionic bond rather than a covalent bond?
 
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ProjectFringe said:
Does anyone happen to know if Cl2+KH > KCl + HCl?

And if it does, what is the reasoning? Is it because Cl2 prefers an ionic bond rather than a covalent bond?
KH is pyrophoric in air. You should also get a violent oxidation reaction with chlorine gas.
 
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willem2 said:
KH is pyrophoric in air. You should also get a violent oxidation reaction with chlorine gas.
I mean HCl the gas, not Hydrochloric Acid, so there is no oxygen present in this reaction (if I understand your response correctly).
 
ProjectFringe said:
I mean HCl the gas, not Hydrochloric Acid, so there is no oxygen present in this reaction (if I understand your response correctly).
An oxidizer is a substance that can accept electrons from other substances. This includes Chlorine molecules Cl2 ,that can take 2 electrons to make Cl-.
 
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willem2 said:
An oxidizer is a substance that can accept electrons from other substances. This includes Chlorine molecules Cl2 ,that can take 2 electrons to make Cl-.
Got it! :biggrin:

So, if I understand correctly you are saying that there will most likely be a reaction between Cl2 and HK, which will produce HCl and KCl?
 

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