Chemistry 9701 · AS & A Level · States of matter

States of matter — practice question

On average, the intermolecular forces in water are much stronger than the average intermolecular forces in steam. On average, the intermolecular forces in ice are a little stronger than the average intermolecular forces in water. The equilibrium processes shown are linked to enthalpy changes. $\text{H}_2\text{O}(l) \rightleftharpoons \text{H}_2\text{O}(g) \quad \Delta H_b$ $\text{H}_2\text{O}(s) \rightleftharpoons \text{H}_2\text{O}(l) \quad \Delta H_m$ Which statements are correct?

  • A1, 2 and 3
  • B1 and 2 only
  • C1 and 3 only
  • D2 and 3 only

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