Using the already given information, show the calculations for the following, in

Question

Using the already given information, show the calculations for the following, including how to find the information that has already been given if possible:

Volume of acetic anhydride (ml) - 1.0ml (already given)

Density of acetic anhydride (g/ml) - 1.082 g/ml (already given)

Mass of acetic anhydride (g) - ?

Mass of isoamyl acetate from acetic anhydride (g) - ?

Volume of isoamyl alcohol (ml) - 2.0 ml (already given)

Density of isoamyl alcohol (g/ml) - 0.809 g/ml (already given)

Mass of isoamyl alcohol (g) - 1.618 g (already given)

Mass of isoamyl acetate from isoamyl acohol (g) - 1.211 g (already given)

Theoretical yield of isoamyl acetate (g) - ?

Actual yield of isoamyl acetate (g) - ?

Percent yield of isoamyl acetate (g) - ?

Explanation / Answer

Volume of acetic anhydride (ml) - 1.0ml (already given)

Density of acetic anhydride (g/ml) - 1.082 g/ml (already given)

Mass of acetic anhydride (g) - 1.082 x 1 = 1.082 g ( Mass = Volume x Density)

Mass of isoamyl acetate from acetic anhydride (g) - (1.082 x 130.19)/ 102.09 = 1.387 g

Where,

mass of isoamyl acetate= 130.19

and mass of acetic anhydride =102.09

Volume of isoamyl alcohol (ml) - 2.0 ml (already given)

Density of isoamyl alcohol (g/ml) - 0.809 g/ml (already given)

Mass of isoamyl alcohol (g) - 1.618 g (already given)

Mass of isoamyl acetate from isoamyl alcohol (g) - 1.211 g (already given)

Theoretical yield of isoamyl acetate (g) - (130.19 x 1.618) / 88.148 = 2.39 g

where,

mass of isoamyl acetate= 130.19

and mass of isoamyl alcohol= 88.184

Actual yield of isoamyl acetate (g) - 1.211 g

Percent yield of isoamyl acetate (g) - [2.39 - 1.211/ 2.39 ] x 100 = 49.33 %

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