Heat effect on chemical equilibrium reaction

Heat effect on chemical equilibrium reaction

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Credit: RICHARD MEGNA/ FUNDAMENTAL PHOTOS/ SCIENCE PHOTO LIBRARY

Caption: Effect of temperature on a chemical equilibrium reaction. Each flask contained the same initial volumes of cobalt (II) chloride, an alkali hydroxide and hydrochloric acid. This forms a mixture of two forms of cobalt (II) hydroxide, alpha- and beta-Co(OH)2. The flask on the left has been cooled, leading to a predominance of pink- coloured beta-Co(OH)2. The flask on the right has been heated, leading to a higher concentration of the blue alpha- form. The flask in the centre is at room temperature, the violet colour resulting from an equilibrium between the two forms.

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Keywords: chemical, chemical equilibrium, chemistry, chemistry equipment, effect of heat on reaction, equilibrium reaction, flask, temperature, thermal

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