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A LEVEL CHEMISTRY FLASHCARDS > CHAPTER 19- LATTICE ENERGY 🤎 > Flashcards

CHAPTER 19- LATTICE ENERGY 🤎 Flashcards

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1
Q

AS level recap- define the following terms and state whether each is exothermic or endothermic: standard conditions, enthalpy change of reaction, enthalpy change of formation, enthalpy change of combustion, enthalpy change of neutralisation

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formation- compound, elements
combustion- substance

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1
Q

Define the standard enthalpy change of atomisation, write the short form of enthalpy change of atomisation and an example equation representing this concept, state and explain whether this enthalpy change is exothermic or endothermic, explain one factor affecting the value of enthalpy change of atomisation

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2
Q

Define lattice energy, write the short form of lattice energy and an example equation representing this concept, state whether this enthalpy change is exothermic or endothermic, explain one factor affecting the value of lattice energy

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3
Q

Define electron affinity and first electron affinity, write the short form of first electron affinity and an example equation representing this concept, state whether this energy change is exothermic or endothermic
*ensure that you also understand the concepts of second and third electron affinities + know how to write equations

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EA1- “is added to”
-Under standard conditions

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4
Q

Explain the trends in electron affinity down group 16 and 17, and across the period up to group 17

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5
Q

State and explain three factors affecting the value of electron affinity

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6
Q

State the use of a born-haber cycle, draw the general structure of such a cycle and write the two formulae associated with this cycle

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7
Q

Calculate the lattice energy of an ionic solid using a born-haber cycle (using the example in your text book)

A

🌻 *make sure to practice using ppq

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8
Q

Draw a born-haber cycle as an energy level diagram (using the two examples in your text book)

A

🌻 *make sure to practice using ppq

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9
Q

State two affecting factors the value of lattice energy

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10
Q

Explain the effect of ion size on the value of lattice energy (use an example in your explanation, 3 key points)

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11
Q

Explain the effect of ionic charge on the value of lattice energy (use an example in your explanation, 1 key point)

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12
Q

Describe the concept of ion polarisation and polarising power using diagrams if necessary, explain two factors affecting ion polarisation

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13
Q

Write a general equation for the decomposition of group 2 carbonates, state and explain the trend in thermal stability down group 2 and relate thermal stability to the enthalpy change

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14
Q

Write a general equation for the decomposition of group 2 nitrates, state and explain the trend in thermal stability down group 2

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15
Q

Define the standard enthalpy change of solution, write the short form of the standard enthalpy change of solution and an example equation representing this concept, state whether this enthalpy change is exothermic or endothermic, explain the relationship between the standard enthalpy change of solution and the solubility of a substance

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16
Q

Describe a practical activity used to find the enthalpy change of solution, list all relevant formulae related to this practical

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17
Q

Define the standard enthalpy change of hydration, write the short form of the standard enthalpy change of hydration, explain what occurs when an ionic solid dissolves in water using a diagram and write equations for the hydration of calcium and chlorine ions

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18
Q

State two factors affecting the magnitude of the enthalpy change of hydration

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19
Q

Explain the effect of ionic radius on the numerical magnitude of an enthalpy change of hydration and support this explanation with an example

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20
Q

Explain the effect of ionic charge on the numerical magnitude of an enthalpy change of hydration and support this explanation with an example

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21
Q

Draw the general structure of the cycle used to calculate the enthalpy change in solution, write the equation for calculating lattice energy and enthalpy change of solution

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22
Q

Calculate the enthalpy change of solution and enthalpy change of hydration using the two examples in your notes

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23
Q

State the trend in solubility of group 2 sulfates

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24
Q

Explain the trend in solubility of group 2 sulfates using two factors, state the relationship between the enthalpy change of solution and the solubility of the salt

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A LEVEL CHEMISTRY FLASHCARDS (9 decks)

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