Baking Soda & Vinegar Chemical Volcano

baking soda (sodium bicarbonate) + vinegar (acetic acid) --> carbon dioxide + water + sodium ion + acetate ion

NaHCO₃(s) + CH₃COOH(l) --> CO₂(g) + H₂O(l) + Na⁺(aq) + CH₃COO^-(aq)

where s = solid, l = liquid, g = gas, aq = aqueous or in solution

Breaking it down:

NaHCO₃ <--> Na⁺(aq) + HCO₃^-(aq)
CH₃COOH <--> H⁺(aq) + CH₃COO^-(aq)

H⁺ + HCO₃^- <--> H₂CO₃ (carbonic acid)
H₂CO₃ <--> H₂O + CO₂

Acetic acid (a weak acid) reacts with and neutralizes sodium bicarbonate (a base). The carbon dioxide that is given off is a gas. Carbon dioxide is responsible for the fizzing and bubbling during the 'eruption'.

• Baking Soda & Vinegar Volcano Materials
• Make the Volcano Dough
• Model a Volcano Cinder Cone
• Cause a Volcanic Eruption
• How a Baking Soda & Vinegar Volcano Works