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A-Level Edexcel Chemistry Solution and Hydration Enthalpy

Review A-Level Edexcel Chemistry solution and hydration enthalpy through hydration definitions and sign-based statement questions.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
A2

Exam points

  • define hydration enthalpy for one mole of gaseous ions becoming hydrated
  • identify that hydration enthalpy is always negative while solution enthalpy is not

12.16—Define the terms ‘enthalpy change of solution, ∆solH’ and ‘enthalpy change of hydration, ∆hydH of an ion’ question 1

[Maximum number: 1]

Which of these statements is true?

A

the enthalpy change of hydration of an ion is always negative

B

the enthalpy change of solution of an ionic compound is always negative

C

an endothermic enthalpy change of solution indicates that an ionic compound will be insoluble

D

the more exothermic the lattice energy of an ionic compound, the more soluble it is likely to be

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