Identifying Endothermic Processes

00:00 1 marks

Which process is endothermic?

A

H₂O(g) → H₂O(l)
B

2H₂(g) + O₂(g) → 2H₂O(l)
C

Na(g) → Na⁺(g) + e⁻
D

Cl(g) + e⁻ → Cl⁻(g)

Hint Hint

Hint

An endothermic process absorbs energy from the surroundings (ΔH > 0). Consider the energy changes involved in phase changes, bond formation/breaking, ionization, and electron gain.

Answer Answer
Mark Scheme Mark Scheme
Explanation Explanation
Examiner Tips Examiner Tips
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Answer Answer

Complete Answer

Na(g) → Na⁺(g) + e⁻

Mark Scheme Mark Scheme

Answer Explanation Answer Explanation

Examiner Tips Examiner Tips

Common Errors Common Errors

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