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


To balance this equation CaCO3 plus HCl yeilds CaCl3 + CO2 + H2O, let’s add up the atoms on each side of the equation we have one calcium we have one carbon we have Three oxygen only one hydrogen and then one fluorine over on the products We have the one calcium the one carbon and oxygens be careful. We have two here plus this one right here, so We have Three of those hydrogen’s we have just the two And then chlorines we have two of those one thing do be careful You have the Cl here and this carbon here Cl is chlorine It’s a single element and then carbon is a different element, okay, so Everything looks good up to the hydrogen’s and the chlorines we have one hydrogen here one chlorine here two hydrogens in two That’s pretty simple to solve if we just put a coefficient of two in front of the HCl Now we have the one times the two that gives us two hydrogen’s and then the one chlorine times that coefficient of two That gives us two chlorines And now we have everything equal on both sides of the equation and it’s balanced. That is the balanced equation for a calcium carbonate plus Hydrochloric acid yields calcium chloride plus carbon dioxide plus water. This is Dr. B. Thanks for watching

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