Question

A reaction was performed in which 3.8 g of cyclohexanol was reacted with an acid catalyst to obtain 2.7 g of cyclohexene. Calculate the theoretical yield for this reaction.

Answer 1

Theoretical Yield = 3.11 g

%age Yield = 86.81 %

Solution:

The Balance Chemical Equation is as follow,

C₆H₁₂O + Catalyst → C₆H₁₀ + H₂O + Catalyst

Where;

C₆H₁₂O = Cyclohexanol

C₆H₁₀ = Cyclohexene

Calculating Theoretical Yield:

According to equation,

100.16 g (1 mol) of C₆H₁₂O produces = 82.15 g (1 mol) of C₆H₁₀

So,

3.8 g of C₆H₁₂O will produce = X g of C₆H₁₀

Solving for X,

X = (3.8 g × 82.15 g) ÷ 100.16 g

X = 3.11 g of C₆H₁₀

Theoretical Yield = 3.11 g

Calculating %age Yield:

As,

%age Yield = Actual Yield ÷ Theoretical Yield × 100

So,

%age Yield = 2.7 g ÷ 3.11 g × 100

%age Yield = 86.81 %