How to Balance: CaCO3 + HCl = CaCl2 + CO2 + H2O (calcium carbonate + hydrochloric acid)

How to Balance: CaCO3 + HCl = CaCl2 + CO2 + H2O (calcium carbonate + hydrochloric acid)

In this video we’ll balance the equation CaCO3 + HCl = CaCl2 + CO2 + H2O and provide the correct coefficients for each compound.

To balance CaCO3 + HCl = CaCl2 + CO2 + H2O you’ll need to watch out for two things.

First, be sure to count all of O atoms on each side of the chemical equation. Once you know how many of each type of atom you have you can only change the coefficients (the numbers in front of atoms or compounds) to balance the equation.

When you balance the equation, it is often easier leave the Oxygen atoms until last.

For a complete tutorial on balancing chemical equations, like calcium carbonate + hydrochloric acid, watch my video:

Important tips for balancing chemical equations:

– Only change the numbers in front of compounds (the coefficients).
– Never change the numbers after atoms (the subscripts).
– The number of each atom on both sides of the equation must be the same for the equation to be balanced.

Drawing/writing done in InkScape. Screen capture done with Camtasia Studio 4.0. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo).


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39 thoughts on “How to Balance: CaCO3 + HCl = CaCl2 + CO2 + H2O (calcium carbonate + hydrochloric acid)”

  1. hi! This helped me greatly! I’m just wondering, why is it H2O and and not H2 (I understand that it would be hard to balance but that’s what I initially thought of)

    sorry if this doesn’t make sense! I’m just trying to learn ahead and have little knowledge 🙂

    Reply
  2. Hey is the reason why someone would suffer from 'bloatedness' from consuming calcium carbonate indigestion tablets due to the byproduct of this reaction, carbon dioxide?

    Reply

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