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MHT CET202410 May 2024Morning ShiftChemistryThermodynamics (C)Actual

Which of the following equations indicates increase in entropy?

Options

  1. ACaO _ ( s ) + CO _ 2( ~g ) CaCO _ 3( ~s )
  2. BNaCl _ ( aq ) NaCl _ ( s )
  3. CNaNO _ 3( ~s ) Na _ ( aq ) ⁺+ NO _ 3( aq ) ⁻
  4. DN _ 2( ~g ) +3 H _ 2( ~g ) 2 NH _ 3( ~g )

Correct answer

C. NaNO _ 3( ~s ) Na _ ( aq ) ⁺+ NO _ 3( aq ) ⁻

Step-by-step solution

Solid NaNO ₃ changes to two aqueous products. Aqueous phase has more randomness than solid phase and hence, entropy of the system increases.

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