Questions: EXPERIMENT 6. Analysis of Vinegar Post-Lab Questions: The federal government defines vinegar as a solution with a minimum of 40 grams of acetic acid per liter of vinegar. 1. Calculate the mass percentage of acetic acid that must be in vinegar. Assume vinegar has a density of 1.00 g / mL. 2. Does the vinegar that you tested comply with federal guidelines?

EXPERIMENT 6. Analysis of Vinegar Post-Lab Questions: The federal government defines vinegar as a solution with a minimum of 40 grams of acetic acid per liter of vinegar. 1. Calculate the mass percentage of acetic acid that must be in vinegar. Assume vinegar has a density of 1.00 g / mL. 2. Does the vinegar that you tested comply with federal guidelines?
Transcript text: EXPERIMENT 6. Analysis of Vinegar Post-Lab Questions: The federal government defines vinegar as a solution with a minimum of 40 grams of acetic acid per liter of vinegar. 1. Calculate the mass percentage of acetic acid that must be in vinegar. Assume vinegar has a density of $1.00 \mathrm{~g} / \mathrm{mL}$. 2. Does the vinegar that you tested comply with federal guidelines?
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Solution

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Solution Steps

Step 1: Understand the Problem

The problem requires us to calculate the mass percentage of acetic acid in vinegar, given that vinegar must contain at least 40 grams of acetic acid per liter. We also need to determine if a tested vinegar sample complies with this guideline.

Step 2: Calculate the Mass Percentage of Acetic Acid

To find the mass percentage of acetic acid in vinegar, we use the formula for mass percentage:

\[ \text{Mass percentage} = \left( \frac{\text{mass of solute}}{\text{mass of solution}} \right) \times 100\% \]

Given:

  • Mass of acetic acid (solute) = 40 grams
  • Volume of vinegar (solution) = 1 liter = 1000 mL
  • Density of vinegar = 1.00 g/mL

First, calculate the mass of the vinegar solution:

\[ \text{Mass of solution} = \text{density} \times \text{volume} = 1.00 \, \text{g/mL} \times 1000 \, \text{mL} = 1000 \, \text{g} \]

Now, calculate the mass percentage:

\[ \text{Mass percentage} = \left( \frac{40 \, \text{g}}{1000 \, \text{g}} \right) \times 100\% = 4.0\% \]

Step 3: Determine Compliance with Federal Guidelines

To determine if the tested vinegar complies with federal guidelines, we need to know the mass of acetic acid in the tested sample. However, the problem does not provide this information, so we cannot answer this part without additional data.

Final Answer

  1. The mass percentage of acetic acid in vinegar must be \(\boxed{4.0\%}\).
  2. Additional data is needed to determine if the tested vinegar complies with federal guidelines.
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