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Step 1: Calculate Moles of Benzoic AcidTo find the moles of benzoic acid, we use the formula:Moles = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} Given that the mass of benzoic acid is 6.1 g and its molar mass is 122 g/mol, we can calculate:Moles of Benzoic acid = \frac{6.1}{122} = 0.0500 molesStep 2: Calculate Weight of m-Bromobenzoic AcidNext, we need to find the weight of m-bromobenzoic acid produced from the moles of benzoic acid. The molar mass of m-bromobenzoic acid is 201 g/mol.Using the moles calculated in Step 1:Weight of m-bromobenzoic acid = Moles \times Molar Mass = 0.0500 \times 201 g = 10.05 gStep 3: Calculate Percent YieldFinally, we calculate the percent yield using the formula:Percent Yield = \frac{\text{Actual weight}}{\text{Theoretical weight}} \times 100 Where the actual weight of m-bromobenzoic acid obtained is 7.8 g and the theoretical weight calculated is 10.05 g:Percent yield = \frac{7.8}{10.05} \times 100 = 77.61%

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