Is mixing vinegar and baking soda endothermic or exothermic?

Yes, it absorbs it from the surrounding air. This is an endothermic reaction. How can you be adding heat to it, and the temperature goes down? The vinegar and baking soda are changing from their individual molecular structures to a new molecular structure - the soupy white goop. read more

Mix baking soda and vinegar to witness an endothermic reaction and soak steel wool in vinegar to witness an exothermic one. The Foaming Volcano Experiment Combine vinegar with baking soda (sodium bicarbonate) and measure the temperature, and you'll find that it drops about 4 degrees Celsius (7.2 degrees Fahrenheit) in about a minute. read more

Mixing baking soda and vinegar together drops the temperature of the liquid by about 4 °C in one minute. (Note that while the temperature drops and the reaction looks endothermic, it’s actually not — other things cause the cooling. read more

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