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Why reactions are endothermic

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Reference no: EM132582631

Sodium Bicarbonate(s) + Citric Acid(aq) = Carbon Dioxide(g) + Water(liq) + Sodium Citrate(aq)

Magnesium Ribbon(s) + Hydrochloric Acid(aq) = Magnesium Chloride(aq) + Hydrogen(g)

Magnesium Oxide(s) + Hydrochloric Acid = Magnesium Chloride(aq) + Water(liq)

Which of the above reactions are endothermic and which are exothermic and why?

Reference no: EM132582631

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