Ücretsiz Kullanmaya Başla
PDF Downloads

Vapor pressure

Chemistry • Intermolecular Forces • Transitional Reasoning • 1 questions

Vapor pressure Transitional Reasoning Download PDF

Chemistry · States of Matter & Solutions · Chemistry · Intermolecular Forces

1 Chemistry practice questions on Vapor pressure. Questions that build towards applied reasoning.

Questions

  1. 1.

    A researcher measures the equilibrium vapor pressure of three pure liquids, X, Y, and Z, in identical closed, evacuated containers at 25 °C and records values of 24 kPa, 58 kPa, and 105 kPa, respectively. Assuming ideal gas behavior in the vapor phase, which of the following conclusions is correct regarding the intermolecular forces and physical properties of these liquids?

    • A) Liquid Z has the strongest intermolecular forces because it establishes the highest vapor concentration at equilibrium.
    • B) Doubling the exposed liquid surface area of liquid Y inside a closed container at 25 °C will double its equilibrium vapor pressure.
    • C) Liquid X exhibits the strongest intermolecular attractive forces, leading to its lowest vapor pressure and highest anticipated normal boiling point.
    • D) Liquid X evaporates more rapidly than liquid Z at 25 °C because fewer molecules possess sufficient kinetic energy to overcome intermolecular attractions.