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General Principles and Processes of Isolation of Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryGeneral Principles and Processes of Isolation of Elements1 Mark
MCQ
Selection of temperature to carry out a reduction process depends so as to make:
  • ✓
    $\triangle G$ negative.
  • B
    $\triangle G$ positive.
  • C
    $\triangle H$ negative.
  • D
    $\triangle H$ positive.
✓

Answer

Correct option: A.
$\triangle G$ negative.
When the fre energy change $\triangle G$ has a negative value, the process becomes spontaneous.
Hence, the selection of temperature to carry out a reduction process depends so as to make $\triangle G$ negative.

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