Question

Toluene, C6H5CH3, is oxidized by air under carefully controlled conditions tobenzoic acid, C6H5CO2H, which is used to prepare the food preservative sodium benzoate, C6H5CO2Na. What is the percent yield of a reaction that converts 1.000 kg of toluene to 1.21 kg of benzoic acid?

Answer 1

Respuesta:

Explicación:

(Google translation)

Toluene molar mass = 92 g / mol

Molar mass of benzoic acid = 122 g / mol

If 1,000 kg of toluene produces 1.21 kg of benzoic acid, 1,000 g of toluene produces 1.21 g of benzoic acid.

If the yield is 100%, 92 g of toluene (1 mol) would produce 122 g of benzoic acid (1 mol)

With this stoichiometric ratio, 1 g of toluene will produce x g of benzoic acid

x = 1,326 g of benzoic acid.

Since only 1.21 g is produced, the yield will be

(1.21 / 1,326) · 100 = 91.25%