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Chapter 3: Q3.16 CYL (page 152)

Calculate the molarity of 6.52 g of CoCl2 (128.9 g/mol) dissolved in an aqueous solution with a total volume of 75.0 mL.

Short Answer

Expert verified

Molarity of CoCl2 = 0.673 M

Step by step solution

01

Given data

Mass of CoCl2 = 6.52 g

Molecular weight of CoCl2 = 128.9 g/mol

Volume = 75 mL = 0.075 L ( 1L = 1000 mL )

Moles of CoCl2 = Mass/ Molecular weight = 6.52 g/ 128.9 g/mol = 0.0505 mol

02

Determine the molarity

Molarity = Moles of solute / Liters of solution

= 0.0505 mol / 0.075 L

= 0.673 M

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