QuestionJuly 18, 2025

Calculate the percent composition of aspirin (C_(9)H_(8)O_(4))

Calculate the percent composition of aspirin (C_(9)H_(8)O_(4))
Calculate the percent composition of aspirin (C_(9)H_(8)O_(4))

Solution
4.1(280 votes)

Answer

Carbon: 59.97%, Hydrogen: 4.48%, Oxygen: 35.55% Explanation 1. Calculate Molar Mass of Aspirin C_{9}H_{8}O_{4} has 9 Carbon, 8 Hydrogen, and 4 Oxygen atoms. Calculate molar mass: 9 \times 12.01 + 8 \times 1.008 + 4 \times 16.00 = 180.16 \text{ g/mol}. 2. Calculate Percent Composition of Each Element Use formula: \text{Percent Composition} = \left(\frac{\text{Mass of element in 1 mole}}{\text{Molar mass of compound}}\right) \times 100. For Carbon: \left(\frac{9 \times 12.01}{180.16}\right) \times 100 = 59.97\%. For Hydrogen: \left(\frac{8 \times 1.008}{180.16}\right) \times 100 = 4.48\%. For Oxygen: \left(\frac{4 \times 16.00}{180.16}\right) \times 100 = 35.55\%.

Explanation

1. Calculate Molar Mass of Aspirin<br /> $C_{9}H_{8}O_{4}$ has 9 Carbon, 8 Hydrogen, and 4 Oxygen atoms. Calculate molar mass: $9 \times 12.01 + 8 \times 1.008 + 4 \times 16.00 = 180.16 \text{ g/mol}$.<br />2. Calculate Percent Composition of Each Element<br /> Use formula: $\text{Percent Composition} = \left(\frac{\text{Mass of element in 1 mole}}{\text{Molar mass of compound}}\right) \times 100$.<br /> For Carbon: $\left(\frac{9 \times 12.01}{180.16}\right) \times 100 = 59.97\%$.<br /> For Hydrogen: $\left(\frac{8 \times 1.008}{180.16}\right) \times 100 = 4.48\%$.<br /> For Oxygen: $\left(\frac{4 \times 16.00}{180.16}\right) \times 100 = 35.55\%$.
Click to rate:

Similar Questions