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Energetics

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Question 1

Which reaction has a standard enthalpy change equal to the standard enthalpy of formation for aluminium iodide?

A

Al(s)+32I2(g)→AlI3(s)\text{Al(s)} + \frac{3}{2}\text{I}_2\text{(g)} \rightarrow \text{AlI}_3\text{(s)}Al(s)+23​I2​(g)→AlI3​(s)

B

2Al(s)+3I2(s)→2AlI3(s)2\text{Al(s)} + 3\text{I}_2\text{(s)} \rightarrow 2\text{AlI}_3\text{(s)}2Al(s)+3I2​(s)→2AlI3​(s)

C

Al(s)+32I2(s)→AlI3(s)\text{Al(s)} + \frac{3}{2}\text{I}_2\text{(s)} \rightarrow \text{AlI}_3\text{(s)}Al(s)+23​I2​(s)→AlI3​(s)

D

Al3+(g)+3I−(g)→AlI3(s)\text{Al}^{3+}\text{(g)} + 3\text{I}^-\text{(g)} \rightarrow \text{AlI}_3\text{(s)}Al3+(g)+3I−(g)→AlI3​(s)

Markscheme

Energetics Questions

  1. A Level
  2. /Chemistry
  3. /Energetics

34 exam-style questions on AQA A Level Chemistry Energetics, covering Enthalpy change, Calorimetry, Applications of Hess's law, and Bond enthalpies. Each one has a worked solution and a mark scheme showing where the marks go.

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