Neco 2023 Chemistry Question 8
Practice objective / multiple choice question 8 from the 2023 Neco Chemistry examination.
A pure substance has a triple point at \(P_{tp}=0.5\ \text{MPa}\) and \(T_{tp}=250\ \text{K}\). Near the triple point the solid-liquid equilibrium line has a constant slope \(\frac{dP}{dT}=0.02\ \text{MPa·K^{-1}}\) and the liquid-vapor line has a constant slope \(\frac{dP}{dT}=0.12\ \text{MPa·K^{-1}}\).\n\n(i) Estimate the pressure at which the substance will boil (liquid-vapor equilibrium) at \(T=300\ \text{K}\).\n(ii) At \(T=300\ \text{K}\) and \(P=1.0\ \text{MPa}\), state whether the substance is in the solid, liquid or gas phase.
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About This Question
This is Neco 2023 Chemistry Question 8. It is one of the objective questions from the 2023 Neco Chemistry examination.
Difficulty level: Medium .
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