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The temperature at which standard Gibbs free energy is zero for calcination reaction is called:

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The temperature at which standard Gibbs free energy is zero for calcination reaction is called:

(a) Absolute temperature

(b) Negative temperature

(c) Transition temperature

(d) Thermal decomposition temperature

I had been asked this question by my college professor while I was bunking the class.

This is a very interesting question from Calcination and Slaking of Lime in chapter Materials for Construction of Basic Civil Engineering

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The correct choice is (d) Thermal decomposition temperature

Best explanation: Transition temperature is for phase transitions.  Absolute temperature is measured relative to absolute zero.  Negative temperature is the one measured below zero.

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