Big Reaction: Alka-Seltzer and water…in space!

Big Reaction: Alka-Seltzer and water…in space!

Alka-Seltzer and water
Alka-Seltzer and water…in space!

This one’s all about location, location, location.

We’ve all seen how Alka-Seltzer reacts with water. (And if you haven’t , today’s your day!) This reaction is especially neat because it takes place in the microgravity environment on board the International Space Station.

Alka-Seltzer is an antacid and pain reliever. The bubbling is due to the antacid part: sodium bicarbonate (NaHCO3) and anhydrous citric acid (C6H8O7) reacting with water. Sodium bicarbonate produces CO2 gas: 2NaHCO3 → Na2CO3 + H2O + CO2.

Here’s the original video, from Plasma Ben:

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