Answer to Question #159790 in General Chemistry for Amr

Question

In a container of volume V maintained constant, a volume of 30.0 mL of ethanol is mixed in the presence of Haq, ions with a volume containing a mass of 15 g of methanoic acid. A state of equilibrium is established at an instant t with the following equation :

HCOH +CH,CH,OH + HCO,CHÚCH + H2O

By means of an acid-base titration, the quantity of matter (the number of mole) of the acid remaining alone is determined experimentally at each instant t of the reaction and then, we deduce the number of moles of ester formed at that instant t, we get 0.26 mol of ester at equilibrium.

1. Determine the yield y of this esterification reaction knowing that the density of the ethanol is 0.785 g/ml.

2. Determine the equilibrium constant K, of the reaction between methanoic acid and ethanol.

3. Deduce the equilibrium constant of the hydrolysis reaction of ethyl methanoate.

Given: H=1; C = 12; 0= 16.

Answer 1

Methanoic acid-0.06

Ethanol-0.57

Ester-0.26