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What amount of bromine will be required to convert 6 g of phenol into 2,4,6-tribromophenol? |
30.63 g 40.64 g 20.35 g 15.63 g |
30.63 g |
The balanced chemical equation for the reaction between phenol and bromine is: From the balanced equation, we can see that 1 mole of phenol reacts with 3 moles of bromine. This means that the molar ratio of phenol to bromine is 1:3. To calculate the amount of bromine required to convert 6 g of phenol, we can use the following steps: Convert the mass of phenol to moles: \(n(phenol) = \frac{m(phenol)}{M(phenol)}\) \(n(phenol) = \frac{6 g}{94.11 g/mol}\) \(n(phenol) = 0.0638 mol\) Use the molar ratio to find the moles of bromine required: \(n(bromine) = n(phenol) × (\frac{3\text{ mol }Br_2}{1\text{ mol phenol}})\) \(n(bromine) = 0.0638 mol × (\frac{3\text{ mol }Br_2}{1\text{ mol phenol}})\) \(n(bromine) = 0.1914 mol\) Convert the moles of bromine to mass: \(m(bromine) = n(bromine) × M(bromine)\) \(m(bromine) = 0.1914 mol × 159.807 g/mol\) \(m(bromine) = 30.63 g\) Therefore, 30.63 g of bromine is required to convert 6 g of phenol into 2,4,6-tribromophenol. The correct answer is 1. 30.63 g. |