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  4. 20 mL of acetic acid reacts with 20 mL of ethyl alcohol to form ethyl acetate. The density of acid and alcohol are 1 g/mL and 0.7 g/mL respectively. The limiting reagent in this reaction is

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Q. $20\,mL$ of acetic acid reacts with $20\, mL$ of ethyl alcohol to form ethyl acetate. The density of acid and alcohol are $1\,g/mL$ and $0.7\, g/mL$ respectively. The limiting reagent in this reaction is

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Solution:

Mass of 20 ml of acetic acid = $ 20 \times 1 = 20\, g$
Mass of 20 ml of ethyl alcohol = $20 \times 0.7$
$ = 14 \,g $
$\underset{\text{46 g}}{C_2H_5OH} + \underset{\text{60 g}}{CH_3COOH} to CH_3COOC_2H_5 + H_2 O $
60 g of acetic acid = 46 g of ethyl alcohol
20 g of acetic acid = 15.3 of ethyl alcohol
Therefore, ethyl alcohol is the limiting reagent.