How many grams of benzene must react with hydrogen to produce 252g of cyclohexane?

Let’s write the equation:
X g-? M = 252 g;
1. С6Н6 + 3Н2 = С6Н12 (cyclohexane) – addition reaction, cyclohexane was obtained;
1 mol 1 mol;
2. Let’s implement the solution, calculate the molar masses of substances:
M (C6H6) = 78 g / mol;
M (C6H12) = 84 g / mol.
3. Determine the number of moles of the reaction product – С6Н12 according to the formula:
Y (C6H12) = m / M = 252/84 = 3 mol;
Y (C6H6) = 3 mol since the amount of these substances according to the equation is equal to 1 mol.
4. Find the mass of benzene:
m (C6H6) = Y * M = 3 * 78 = 234 g.
Answer: to carry out the process, benzene weighing 234 g is required.