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Thermodynamics — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThermodynamics1 Mark
MCQ
Based on knowledge of solid compounds and bond strengths, which of the following reactions is considered non $-$ spontaneous due to the extremely high activation energy but once started becomes extremely spontaneous?
  • ✓
    Dissolution of sodium hydroxide.
  • B
    Creating a dilution of hydrochloric acid.
  • C
    The burning of $\mathrm{C}_{20} \mathrm{H}_{42}$​.
  • D
    The synthesis of silver oxide.
✓

Answer

Correct option: A.
Dissolution of sodium hydroxide.
Dissolution of $\ce{NaOH}$ required high activation energy but once started becomes extremely spontaneous.

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