JAMB - Chemistry (2017 - No. 9)
In the laboratory preparation of ethyl ethanoate, the water present in the mixture is removed using ?
Anhydrous CaCl2
concentrated NaCO4
dilute NaOH
concentrated H2SO4
คำอธิบาย
To purify the distillate of impurities like unreacted ethanol, acids, water and ethoxyethane.
Adding anhydrous calcium chloride and leave it to stand for a day to remove any water present
in the mixture.