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(1) Which statement is NOT correct about Raoultian standard state? A. 1 wt% is used as the standard state for pure solids and liquids. B. Activity of pure liquids and solids are equal to 1. C. Activity of gases at 1 atm is equal to 1. D. For calculating Raoultian activity, amount of each substance is entered as X (mole fraction) (2) Which statement is correct about Boudouard reaction? A. Partial pressure of CO (Pco) decreases as the total pressure increases. B. CO-lean mixtures can always move towards equilibrium. C. Boudouard reaction is instantaneous at room temperature. D. Partial pressure of CO (Pco) decreases at higher temperatures. (3) Which statement is NOT correct about Ellingham diagram? A. Ellingham diagram can be used to determine the partial pressure of oxygen in equilibrium with a metal oxide at a given temperature. B. Reactions closer to the bottom of the diagram are associated with the most stable metals. C. Ellingham diagram shows the temperature dependence of the stability of oxides. D. Reactions closer to the top of the diagram are associated with the most unstable oxides