Answer :
Answer:
2.54 g
Explanation:
Equation for the reaction was followed by the dehydration of:
Cyclohexanol ----> Cyclohexene
Given that:
mass of cyclohexanol = 3.1 g
mass of cyclohexene = 2.2 g &
the standard molar mass of cyclohexanol is known to be = 100.16 g/mol
Also, the standard molar mass for cyclohexene = 82.14 g/mol
From what we have above, we can calculate for their respective numbers of moles;
By the formula which say;
number of moles = [tex]\frac{mass(g)}{molar mass}[/tex]
number of moles of cyclohexanol = [tex]\frac{3.1(g)}{100.16g/mol}[/tex]
= 0.03095 moles
From the equation for the dehydration reaction above;
one mole of cyclohexanol gives one mole of cyclohexene
∴ 0.03095 moles of cyclohexanol is said to be equal to 0.03095 moles of cyclohexene
Thus, having gotten that; we can proceed to calculate for our theoretical yield of cyclohexene.
Theoretical yield of cyclohexene = (number of moles × molar mass) of cyclohexene
= (0.03095 g × 82.14 g/mol)
= 2.542233 g of cyclohexene
≅ 2.54 g to two significant figures.