How many grams of benzene can be obtained from 6 moles of cyclohexane at 90% benzene yield.

To solve the problem, write down the equation:
C6H12 (cyclohexane) = 3H2 + C6H6 – dehydrogenation reaction, benzene is released;
Let’s calculate the molar mass of the reaction product: С6Н6;
M (C6H6) = 78 g / mol.
Find the number of moles of benzene:
Y (C6H12) = 6 mol;
Y (C6H6) = 6 mol since according to the equation the amount of these substances is equal to 1 mol.
Determine the theoretical mass of benzene:
m (C6H6) = 6 * 78 = 468 g.
practical mass is calculated by the formula:
W = m (practical) / m (theoretical) * 100;
m (practical) = 0.90 * 468 = 421.2 g.
Answer: the mass of benzene is 421.2 g.