What is the molar oconcentration of 30g KCl and 30g of CaCl2 added to 50 dL of DI water?a.) what is the molar concerntration of Ca2+b.) what is the molar concentration of K+c.) what is the molar concentration of Cl-d.) what is the osmolarity of this solution?e.) what is the tonicity of this solution?

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Asked Nov 20, 2019
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What is the molar oconcentration of 30g KCl and 30g of CaCl2 added to 50 dL of DI water?

a.) what is the molar concerntration of Ca2+

b.) what is the molar concentration of K+

c.) what is the molar concentration of Cl-

d.) what is the osmolarity of this solution?

e.) what is the tonicity of this solution?

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Expert Answer

Step 1

Formula to find the molar concentration is

Here, c is the molar concentration

          m is the mass of the solute in grams

          v is the volume of the solution in liters

          MW is the molecular weight in g/mol.

50 dl of distilled water is equal to 5L.

Step 2

To find the molar concentration of Ca2+

Molecular weight of Ca2+ is 40.08 g/mol

                C = (30/5) × (1/ 40.08)

                    = 6 × 0.02495

                    = 0.1497      

Molar concentration of Ca2+ is 0.1497 mol/L

Step 3

To find the molar concentration of K+

Molecular weight of K+ is 39.0983 g/mol

                C = (30/5) × (1/ 39.0983)

          &nbs...

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