Which of the following statements is correct according to the basic concept of thermodynamics which governs the feasibility of metallurgical process?(a)When the value of ΔG is positive for all the equation ΔG=ΔH-TΔS, the reaction will proceed.(b)If reactants and products of two reactions are put together and ΔG is –ve, the overall reaction will occur.(c) On increasing the temperature, the value of ΔG becomes +ve.(d) Feasibility of thermal reduction of an ore can be established by Ellingham diagram in which a straight line shows the reaction will precede.

Which of the following statements is correct according to the basic co

1.	Which of the following statements is correct according to the basic concept of thermodynamics which governs the feasibility of metallurgical process?(a)When the value of ΔG is positive for all the equation ΔG=ΔH-TΔS, the reaction will proceed.(b)If reactants and products of two reactions are put together and ΔG is –ve, the overall reaction will occur.(c) On increasing the temperature, the value of ΔG becomes +ve.(d) Feasibility of thermal reduction of an ore can be established by Ellingham diagram in which a straight line shows the reaction will precede.
Answer» (b) The process of interpretation involves coupling of two reactions, getting the sum of ΔG and looking for its sign. Overall –ve value of ΔG shows that reduction of ore is possible.

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