Cobalt(II) chloride hexahydrate, CoCl2·6H2O, is a bright pink compound, but in the presence of very dry air it loses water vapor to the air to produce the light blue anhydrous salt CoCl2. Calculate the standard free-energy change for the reaction at 25°C:
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What is the partial pressure of water vapor in equilibrium with the anhydrous salt and the hexahydrate at 25°C? (Give the value in mmHg.) What is the relative humidity of air that has this partial pressure of water? The relative humidity of a sample of air is
What do you expect to happen to the equilibrium partial pressure over the hexahydrate as the temperature is raised? Explain.
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General Chemistry - Standalone book (MindTap Course List)
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