When solutions of silver nitrate and calcium chloride are mixed, silver chloride

Question

When solutions of silver nitrate and calcium chloride are mixed, silver chloride cipitates out of solution according to the equation 2AgNO (ag) + CaCl2(ag)-2AgCl(s)+Ca(NO3)2 (aq) Y Part A Express your answer with the appropriate units. View Available Hint(s) mass of AgCl-Value Units Submit Part B The reaction described in Part A required 3.06 L of calcium chloride. What is the concentration of this calcium chloride solution? Express your answer with the appropriate units. View Available Hint(s) Units Submit

Explanation / Answer

Part a

Moles of AgNO3 = molarity x volume

= 0.201 mol/L x 1.41 L

= 0.28341 mol

From the stoichiometry of the reaction

Moles of AgCl produces = 2 x moles of AgNO3

= 2 x 0.28341

= 0.56682 mol

Mass of AgCl produced = moles x molecular weight

= 0.56682 mol x 143.32 g/mol

= 81.24 g

Part b

Moles of CaCl2 required = moles of AgNO3 / 2

= 0.28341 mol / 2

= 0.141705 mol

Concentration of CaCl2 = 0.141705 mol / (3.06 L)

= 0.0463 M

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