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JEE Main201911 Jan 2019Morning ShiftChemistryThermodynamics (C)Actual

For the chemical reaction X Y , the standard reaction Gibbs energy depends on temperature T (in K ) as _ r G ^ ( . in . kJ mol ⁻¹ )=120- 3 8 ~T The major component of the reaction mixture at T is :

Options

  1. AY if T=300 K
  2. BY if T =280 ~K
  3. CX if T=350 ~K
  4. DX if T=315 K

Correct answer

D. X if T=315 K

Step-by-step solution

At 315 ~K ; G ^ =120- 3 8 ~T G^ =120-118.125= positive Since G ^ is positive then K _ eq [ Y ]

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