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Calculate the mass of ammonium chloride required to prepare 25 mL of a 2.0 M solution,...

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Chemistry

Calculate the mass of ammonium chloride required to prepare 25mL of a 2.0 M solution, and the mass of calcium chloride requiredto prepare 25 mL of a 2.0 M solution.

Answer & Explanation Solved by verified expert
3.7 Ratings (606 Votes)

Calculation

To prepare 2 M of 25 ml NH4Cl solution

mass of NH4Cl required = molarity x molar mass c volume (L)

                                      = 2 M x 53.5 g/mol x 0.025 L

                                      = 2.675 g

To prepare 2 M of 25 ml CaCl2 solution

mass of CaCl required = molarity x molar mass c volume (L)

                                   = 2 M x 110.98 g/mol x 0.025 L

                                 = 5.049 g
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