Boiling points: alcohol vs ether vs alkane of similar massक्वथनांक: समान द्रव्यमान वाले ऐल्कोहॉल, ईथर और ऐल्केनBoiling points: alcohol vs ether vs alkane of similar mass

Class 12 Chemistry · Chapter 7 · interactive diagram

Parts and what they mean

• Propane, 231 K (प्रोपेन, 231 K) — Only weak van der Waals forces between molecules.
• Methoxymethane, 248 K (मेथॉक्सीमेथेन, 248 K) — Polar C–O bonds (dipole–dipole forces) but no O–H, so no hydrogen bonding between molecules: intermediate b.p.
• Ethanol, 351 K (एथेनॉल, 351 K) — Intermolecular hydrogen bonding: far higher b.p. than propane of comparable molecular mass.
• n-Pentane, 309.1 K (n-पेन्टेन, 309.1 K) — Immiscible with water.
• Ethoxyethane, 307.6 K (एथॉक्सीएथेन, 307.6 K) — Close to pentane: ethers cannot H-bond to each other. But it dissolves in water (7.5 g per 100 mL) because water H-bonds to the ether O.
• Butan-1-ol, 390 K (ब्यूटेन-1-ऑल, 390 K) — Hydrogen bonding raises the b.p.; solubility 9 g per 100 mL water.
• Colour key (रंग संकेत) — Values from NCERT Sections 7.4.3 and 7.6.2.

Original diagram drawn by Simple Learning Hub, based on the NCERT textbook. Report a mistake