Practical Organic Chemistry-I Lab 5 (Aldehydes, Ketones) PDF
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Uploaded by WealthyCantor610
2024
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Summary
This document outlines different chemical aspects of laboratory experiments concerning aldehydes and ketones. It involves chemical tests like the Iodoform test, Sod. nitroprusside test, Salicylic test and 30% NaOH test. It details observations, chemical characteristics, including conditions and properties, of various chemicals.
Full Transcript
Practical Organic Chemistry-I (Fall Semester 2024-2025) Lab 5 (Aldehydes, ketones) 1 Laboratory equipment 2 3 H Aliphatic Aliphatic...
Practical Organic Chemistry-I (Fall Semester 2024-2025) Lab 5 (Aldehydes, ketones) 1 Laboratory equipment 2 3 H Aliphatic Aliphatic Aldehydes Ketones Aromatic Aromatic Formyl group Formaldehyde Acetaldehyde Benzaldehyde Acetophenone 4 Physical Character Formaldehyde Acetaldehyde Benzaldehyde Acetophenone 1-Condition: liquid, mobile 2-Color: Colorless 3-Odor: Pungent Odor disagreeable odor Bitter almonds characteristic odor 4-Miscibility: H2O: Miscible Immiscible ✓ L.P Observation: No Change Comment: It may be neutral compound ✓ Anhydrous Observation: White blue CuSO4 Comment: It may be aqueous solution Immiscible Com: it may not be acidic 10% NaOH compound dil. HCl Immiscible Com: it may be neutral 5 compound Chemical Character Formaldehyde Benzaldehyde Acetaldehyde Acetophenone 1- Soda lime Not applied Why?? 2-FeCl3 No characteristic observation 3-Na2CO3 Observation: No effervescence Comment: it may not be strong acidic compound 4- Element Test N (-) S (-) X (-) 6 I- Iodoform Test ❖ Procedure Add I2 solution portion wise till yellow color 3ml 10%NaOH 1ml sample Observation + ve Result - ve Result Yellow ppt (Turbidity) Clear Yellow Solution 7 (Acetaldehyde, Acetophenone) (Formaldehyde, Benzaldehyde) II- Sod. nitroprusside Test ❖ Procedure 1 ml 10%NaOH 1 ml Sod.nitroprusside 1 ml sample Observation + ve Result - ve Result (Red Color) 8 (Acetaldehyde, Acetophenone ) (Formaldehyde, Benzaldehyde) III- Salicylic acid Test ❖ Procedure 2-4dp Conc. H2SO4 5 dp sample 0.5gm Salicylic acid Observation + ve Result - ve Result (Crimson Red Color) 9 (Formaldehyde) (Acetaldehyde, Acetophenone, Benzaldehyde) IV- 30%NaOH Test ❖ Procedure 1 ml 30%NaOH 1ml sample W.B. Observation + ve Result - ve Result Yellow Resin with bad odor (Acetaldehyde) (Formaldehyde, Benzaldehyde, Acetophenone) 10 Special Test I- Iodoform II- Sod. nitroprusside III- Salicylic acid IV- 30%NaOH Acetaldehyde Acetaldehyde Formaldehyde Acetaldehyde Acetophenone Acetophenone 11 Thank you 12
