General Chemistry I — 2018 Past Questions

University of Ilorin CHM101: 2 questions.

Topics: Chemical equations and stoichiometry, Elementary thermochemistry

1. From thermodynamic principles, the free energy of a reaction system is made up of two energy components:
   1. entropy and temperature
   2. enthalpy and entropy
   3. enthalpy and temperature
   4. entropy and Hemholtz free energy
2. For the reaction 2HI(g) → H₂(g) + I₂(g), calculate the rate at which HI disappears if the rate of I₂ formation is 3.5 × 10⁻⁵ mol dm⁻³ s⁻¹.
   1. 7.0 × 10⁻⁵ mol dm⁻³ s⁻¹
   2. 3.5 × 10⁻⁵ mol dm⁻³ s⁻¹
   3. 14.0 × 10⁻⁵ mol dm⁻³ s⁻¹
   4. 1.75 × 10⁻⁵ mol dm⁻³ s⁻¹

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