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solubility

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卡片总数: 8 张•内容版本: v4•公开卡包•更新时间: 8/1/2026

卡片预览 (8 张)

#1
正面 (问题)

is lattice enthalpy always positive or always negative

背面 (解答)

always negative

#2
正面 (问题)

define hydration enthalpy (deltaH hyd)

背面 (解答)

the enthalpy change when one mole of gaseous ions dissolves in water to form an infinitely dilute solution

#3
正面 (问题)

define enthalpy of solution (deltaH soln)

背面 (解答)

the enthalpy change when 1 mole of an ionic solid is dissolved in water to form an infinitely dilute solution.

#4
正面 (问题)

deltaH solution =

背面 (解答)

deltaH hydration - deltaH lattice

#5
正面 (问题)

what causes the lattice enthalpy to be more exothermic

背面 (解答)

increased ionic charge decreased ionic radius

#6
正面 (问题)

what is lattice enthalpy a measure of

背面 (解答)

the strength of the ionic bond (More negative value means stronger ionic bond)

#7
正面 (问题)

is hydration enthalpy always negative or always positive

背面 (解答)

always negative (exothermic process)

#8
正面 (问题)

how is a sample of a solid purified by recrystallisation (4 marks)

背面 (解答)

1 dissolve in a minimum volume of hot solvent 2 leave to recrystallise 3 filter under suction 4 dry between filter papers