In the reactions (I) H2 (g) + 1/2O2(g) → H2O(l); ∆H = -286 KJ (II)…

Chemistry JAMB 1983

In the reactions

(I) H2 (g) + 1/2O2(g) → H2O(l); ∆H = -286 KJ

(II) C(s) + O2g) → CO2 (g); ∆H = -406 KJ the equations imply that

  • more heat is absorbed in (l)
  • more heat is absorbed in (ll)
  • less heat is evolved in (l) checkmark
  • reaction (ll) proceeds faster than (l)
  • reaction (l) proceeds faster than (ll)

The correct answer is: C

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