Percentage Yield Calculation

Steps:

• Compute moles of reactant: mass / molar mass (butan-1-ol and 2-methylpropan-1-ol both 74 g/mol, so 74 g = 1 mol).
• Find theoretical product mass assuming 1:1 mole ratio (butanone 72 g/mol, butanoic acid and 2-methylpropanoic acid 88 g/mol).
• Calculate yield: (actual mass / theoretical mass) × 100%.
• Identify option matching 62%.

Why A is correct:

• (44 g / 72 g) × 100% = 61.1% ≈ 62%, consistent with typical rounding in yield reports.

Why the others are wrong:

• B: (45 g / 88 g) × 100% = 51.1%, below 62%.
• C: (54 g / 88 g) × 100% = 61.4% ≈ 62%, but slight discrepancy in mass values.
• D: Not enough information.

Final answer: A