Alcohols Phenols and EtherseasyNUMERICAL

When completely dry silver oxide () reacts to completion with an excess of ethyl bromide () under heAlcohols Phenols and Ethers Chemistry Question

Question

When completely dry silver oxide ($Ag_2O$) reacts to completion with an excess of ethyl bromide ($C_2H_5Br$) under heating, exactly $1 \text{ mole}$ of the symmetric ether product is formed. How many moles of silver bromide ($AgBr$) precipitate are concurrently generated?

Answer: 2

💡 Solution & Explanation

The balanced chemical equation is $2 C_2H_5Br + Ag_2O \xrightarrow{\Delta} C_2H_5-O-C_2H_5 + 2 AgBr \downarrow$. For every one mole of the dialkyl ether formed, the two displaced bromide ions react with the two silver ions from the oxide, precipitating exactly 2 moles of $AgBr$.

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