1 CaCO3(s) + 2 HCl(aq) → 1 H2O(l) + 1 CO2(g) + 1 CaCl2(aq) (Use balanced equation above to calculate). Stomach acid is essentially 0.100 M HCl. An active ingredient found in antacids such as Alka Seltzer is calcium carbonate, CaCO3. Calculate the grams of CaCO3 needed to react exactly with 80.0 mL of stomach acid.

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.