Question
Potassium metabisulhpite is used as a stable source
ofSolution
Potassium metabisulphite is a commonĀ wineĀ orĀ mustĀ additive, in which it forms sulfur dioxide (SO2). It decomposes at 190Ā Ā°C, yieldingĀ potassium sulfiteĀ andĀ sulfur dioxide:
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