Question

Weakly acidic character of alcohols is indicated by its reaction with which of the following

Answer 1

Explanation:

Acidity of alcohols therefore decreases as the size of the conjugate base increases. However, “naked” gaseous ions are more stable the larger the associated R groups, probably because the larger R groups can stabilize the charge on the oxygen atom better than the smaller R groups.

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Answer 2

Ethanol reacts with sodium metal to liberate hydrogen gas, the weakly acidic character of alcohols is indicated by this reaction

• We know metals react with acids like HCl to liberate metal salt and hydrogen gas
• For example, zinc metal reacts with HCl to give zinc chloride and hydrogen gas.
• Similarly ethanol, alcohol reacts with sodium metal to liberate hydrogen gas.
• Thus ethanol is having an acidic nature.
• Alcohol acidity can be explained in this manner, in OH bond H is connected to electronegative oxygen which pulls the pair of electrons towards it.
• So it is easy for the alcohols to liberate hydrogen.
• As per Arrhenius's theory, the species which can liberate H⁺ is an acid.
• So alcohols can act as acids.
• Alcohol is a weaker acid than acid because the RO⁻ ion of alcohols is less stable due to the +I effect of the alkyl group, and the OH⁻ ion of water is comparatively more stable.
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