Calculate the mass of phenol that can be obtained by hydrolysis of 94.2 g of bromobenzene

Calculate the mass of phenol that can be obtained by hydrolysis of 94.2 g of bromobenzene if the mass fraction of the reaction product yield is 60%.

Let’s execute the solution:

According to the condition of the problem, we write down the process equation:
C6H5Br + H2O = C6H5OH + HBr – hydrolysis, phenol is released;

Calculations:
M (C6H5Br) = 156.9 g / mol;

M (C6H5OH) = 94 g / mol;

Y (C6H5Br) = m / M = 94.2 / 156.9 = 0.6 mol;

Y (C6H5OH) = 0.6 mol since the amount of substances is 1 mol.

Find the mass of the product:
m (C6H5OH) = Y * M = 0.6 * 94 = 56.4 g (theoretical weight);

m (C6H5OH) = 0.60 * 56.4 = 33.84 g (practical weight).

Answer: the mass of phenol, taking into account the product yield, is 33.84 g