g Acetic acid is diluted with water to make a solution of vinegar. You have a sample of vinegar that contains 16.7 g of acetic acid. Determi

Question

g Acetic acid is diluted with water to make a solution of vinegar. You have a sample of vinegar that contains 16.7 g of acetic acid. Determine the number of moles of acetic acid in the vinegar sample.

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Thiên Thanh 4 years 2021-07-18T23:36:48+00:00 1 Answers 25 views 0

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  1. Adela
    0
    2021-07-18T23:38:35+00:00
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    Answer:

    0.278 mol

    Explanation:

    Step 1: Given and required data

    Mass of acetic acid (m): 16.7 g

    Chemical formula of acetic acid: CH₃COOH (C₂H₄O₂)

    Step 2: Calculate the molar mass (M) of acetic acid

    We will use the following expression.

    M(C₂H₄O₂) = 2 × M(C) + 4 × M(H) + 2 × M(O)

    M(C₂H₄O₂) = 2 × 12.01 g/mol + 4 × 1.01 g/mol + 2 × 16.00 g/mol = 60.06 g/mol

    Step 3: Calculate the number of moles (n) of acetic acid

    We will use the following expression.

    n = m/M

    n = 16.7 g/(60.06 g/mol) = 0.278 mol

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