Question

What is the empirical and molecular formula ? What is the molecular weight ?

omputer Unknown #10 Physical Properties MP48-51 °C White solid C = 48.27% H=3.54% Sodium Fusion Test A portion of the sedium fi ltrate was treated with and heated. It was then acidified wit was noticed rate was treated with ferrous sulate o acidified with dilute sulfuric acid. No observable change Another portion of the sodium fusion filtrate was treated with te observable change was noticed. on filtrate was treated with lead acetate. No er portion was acidified and silver nitrate added. An off white precipitate was formed. Solubility Tests Key water 5 % hydrochloric acid (-) Insoluble 5 % sodium bicarbonate Soluble (.) 5 % sodium hydroxide (8) slightly soluble (+) conc sulfuric acid (h) soluble hot (c) becomes cloudy Classification Tests Beilstein Test. A yellow and blue flame is observed Combustion - A blue flame is observed 2,4-DNP - An orange precipitate is formed. Tollens Test - No reaction is observed Lucas Test - Nothing was observed. Jones Reagent (Chromic Acid Test) . The solution remains orange and no precipitate is formed. Potassium permaganate test - The color of the test solution persists for about five minutes.. Todoform Test - A voluminous yellow precipitate is formed. Bromine in methylene chloride - The reddish color persists after about three drops are added to the unknown Silver nitrate test . No reaction is observed after about five minutes.

Answer 1

Physical properties

low melting point solid

Carbon : Hydrogen is ~ 1:13

Sodium fusion test

Absence of Nitrogen

Absence of sulfur

Presence of Chlorine

Solubility test

As far as i can see its misleading because the compound is soluble in acid and base and Conc. H₂SO₄

This may be because of presence of carbonyl functional group.

Classification test

beilstein test - Presence of halide

Combustion test - not aromatic compound

2,4-DNP - Presence of aldehyde or ketone

Tollens test - Absence of aldehyde

Lucas test - Absence of alcohol

Jones reagent - Absence of alcohol

KMnO₄ test- absence of oxdizable functional group or unsaturation

Br₂ in CCl₄- Absence of unsaturation

Iodoform test - Presence of -COCH₃

Silver nitrate test - presence of chlorine (it already confirmed by sodium fusion test)

Based on above test the empirical formula of given compound may be C4H4ClO