Calculation of Equivalent Calcium Carbonate Concentration

To calculate the equivalent calcium carbonate concentration of 110 mg/l of CaCl2, we need to follow a specific formula.

Formula

Equivalent Calcium Carbonate Concentration = (Molecular Weight of Calcium Carbonate / Molecular Weight of Calcium Ion) x Concentration of Calcium Ion

Calculation

1. Molecular Weight of Calcium Carbonate = 100.0869 g/mol
2. Molecular Weight of Calcium Ion = 40.078 g/mol
3. Concentration of Calcium Ion = 110 mg/l

Using the formula, we can calculate the equivalent calcium carbonate concentration as follows:

Equivalent Calcium Carbonate Concentration = (100.0869 / 40.078) x 110

Equivalent Calcium Carbonate Concentration = 275.382 mg/l

Therefore, the equivalent calcium carbonate concentration of 110 mg/l of CaCl2 is 275.382 mg/l.

Explanation

Calcium chloride (CaCl2) contains calcium ions (Ca2+) and chloride ions (Cl-). When calcium ions are present in water, they can react with bicarbonate ions (HCO3-) and carbonate ions (CO32-) to form calcium carbonate (CaCO3). This reaction is known as precipitation or scaling, which can cause various problems in water systems.

The equivalent calcium carbonate concentration is a measure of the amount of calcium carbonate that would have the same effect as the calcium ions present in water. It is expressed in mg/l or ppm. To calculate the equivalent calcium carbonate concentration, we need to convert the concentration of calcium ions into an equivalent concentration of calcium carbonate.

The formula for calculating the equivalent calcium carbonate concentration involves the molecular weight of calcium carbonate, the molecular weight of calcium ion, and the concentration of calcium ion. By multiplying the concentration of calcium ion by the ratio of molecular weights, we can determine the equivalent concentration of calcium carbonate.

In this case, the equivalent calcium carbonate concentration of 110 mg/l of CaCl2 is 275.382 mg/l, which means that the calcium ions in the water have the same effect as 275.382 mg/l of calcium carbonate.