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Vapour Pressure Lab: Crafting the Perfect Fragrance Blend

Solutions

Step into the role of a formulation scientist at a traditional Indian perfume house in Kannauj. Apply Raoult's law to create perfect volatile liquid mixtures by understanding vapour pressure behaviour of binary solutions.

30 min
Duration
3
Missions
9
Problems
145
XP

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📖 Your Story

You are a trainee perfumer at the famous Gulabsingh Johrimal fragrance house in Kannauj, Uttar Pradesh, known for its attar-making tradition since the Mughal era. Your mentor has tasked you with creating custom fragrance blends by mixing volatile essential oils. You must understand how vapour pressure changes with composition to predict evaporation behaviour and ensure consistent fragrance quality.

What You'll Learn

  • Apply Raoult's law to calculate partial vapour pressures of volatile components in binary liquid solutions
  • Understand the relationship between mole fraction in liquid phase and vapour phase composition
  • Use Dalton's law to determine total vapour pressure and vapour phase composition
  • Explain why vapour phase is richer in the more volatile component

How to Play

1Select two volatile liquid components from the essential oil inventory
2Adjust the mole fraction of each component using the mixing controls
3Observe how changing composition affects partial and total vapour pressure
4Calculate expected vapour pressures and compare with simulated results
5Identify which component dominates the vapour phase at equilibrium

3 Missions Await

1

Understanding Partial Pressures

3 problems · 40 XP

2

Vapour Phase Analysis

3 problems · 45 XP

3

Master Perfumer Challenge

3 problems · 60 XP

Vapour Pressure Lab: Crafting the Perfect Fragrance Blend — Class 12 Chemistry Lab | Apar Academy