# Calculate the mass of cyclopentane formed by the action of sodium on 1.5 dichloropentane with a mass of 2.15.

September 15, 2021 | education

| Let’s implement the solution:

1. In accordance with the condition of the problem, we compose the equation:

m = 2.115 g. X g -?

C5H12Cl + 2Na = C5H10 + 2NaCl – cyclopentane obtained;

2. Calculations by formulas:

M (C5H12Cl) = 143 g / mol;

M (C5H12) = 70 g / mol.

3. Determine the amount of dichloropentane, if the mass is known:

Y (C5H12Cl) = m / M = 2.115 / 143 = 0.014 mol;

Y (C5H12) = 0.014 mol since the amount of substances according to the equation is 1 mol.

4. Find the mass of the product:

m (C5H12) = Y * M = 0.014 * 70 = 1.04 g.

Answer: Cyclopentane weighing 1.04 g was obtained.

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