Spontaneous Reaction Video Lessons

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Problem: Which, if any, of the following processes is spontaneous under the specified conditions?Select one: A. H2O(l) → H2O(s) at 25°CB. CO2(s) → CO2(g) at 0 °CC. 2 H2O(g) → 2H2(g) + O2(g)D. C(graphite) → C(diamond) at 25°C and 1 atm pressureE. None of the above is spontaneous

FREE Expert Solution

The statements given describe the spontaneity of the reaction at different temperatures

  • Recall that when ΔH and ΔS are given, we can determine the spontaneity of the reaction based on their signs
  • We can use the Punnett square shown below:


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Problem Details

Which, if any, of the following processes is spontaneous under the specified conditions?


Select one: 

A. H2O(l) → H2O(s) at 25°C

B. CO2(s) → CO2(g) at 0 °C

C. 2 H2O(g) → 2H2(g) + O2(g)

D. C(graphite) → C(diamond) at 25°C and 1 atm pressure

E. None of the above is spontaneous


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