Question

Given: 50mL of solution diethyl ether solution containing 1.00g each of benzoic acid, phenol and aniline,50 mL of sodium bicarbonate solution, 50 ml of sodium hydroxide solution, sodium sulfate and HCl.

1. Which layer in the separatory funnel (top or bottom layer) is the organic layer during an extraction process?

2. Given that sodium bicarbonate and sodium hydroxide solution are 5% by weight, what would be the volume of 1M HCl needed to be added for acidification to crystalize the benzoic acid and the phenol

Answer 1

Q.1) On top of separating funnel organic solvent will be observed ,for explanation refer attached photo.

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. ie 500 1000 m 5-1. NaoH - 5gm loomi Molarity a weight molecular weighe .: x indu 5 50 gm Molarity of NaoH = toxi 1.25 M 100mi like wise molarity of Nazcoz can be determind. Molecurg weight of Nazcas = 105.9888 Ilmos x of Narcowa 5 us. 50 gm = 5 am 1000 m 50 JM .: Molarins - To5 9888 X I -0.4717UM - 50 mi of NaoH is added. we can have N.Vo = N2 V2 N.2 - Normaling of her Nic normalin ol NaOH. V. Volver of Naolt Var Volum of her = 62. 5m – V2 = - - NrXVI - 1-25 x 50 na issat N2 Volume required 54. Nach is to neutralise, Tomi 62.5 ms of a MHCI

ct Mazcoz. Simmilesih – Nov = N2 U2 N - Normality of Narcos V = volume of Narcos N2 - Normality of HCl Ur- volume of Hor Nivi - 0.47174 X 50 & V2 = - 12 . 1 = 23.587 mi . 23.587 ml of IM HCl will require to neukalise 50 ml of 5 1. Na2CO3. . Total volume requied to crystalise benzoic acid and phend is 62.5 + 23.587 mi of HCC =186087 MI

Q-2 phenol & Naot phenonide ONA o] + NaOH - 107 + H2O NH2 NH3 CI o + HCl - -> CO0N cooNa + Nazcoa 7 + H2O + COL when above organic compounds are treated with above reakr their salts are produced they are presew in aqueous phase Top layer in the separatory farnel is the organic layer as the density of diethyl than. & water. ether is il 0.713 less gmi