GRE Subject Test: Chemistry : Gravimetric Analysis

Study concepts, example questions & explanations for GRE Subject Test: Chemistry

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Example Questions

Example Question #1 : Gravimetric Analysis

Household vinegar contains the organic compound acetic acid with chemical formula, . If a  vinegar sample contains  of acetic acid, calculate the percent (mass/mass) of the  in the vinegar sample.

Density of vinegar is the following:

Possible Answers:

Correct answer:

Explanation:

Convert the moles of  to grams:

To calculate the percentage of  in the vinegar we need to use the following formula:

Therefore, 

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