Question

Determine the mass of chloride (mw = 35.45 g/mol ) in grams present in 100 ml of a 0.325 m solution of aqueous ticl3 (titanium(iii) chloride).

Answer 1

The mass chloride is 3.456 grams

calculation

Step:1 calculate the moles of TiCl3

moles = molarity x volume in liters

volume in liters = 100 ml /1000 = 0.1 L

molarity = 0.325 M = 0.325 mol / L

moles is therefore = 0.1 L x 0.325 mol /L = 0.0325 moles

step 2: find the moles of Cl

since there is 3 atoms of cl in TiCl3 the moles of Cl

= 3 x 0.0325 =0.0975 moles

Step 3: calculate mass of cl

mass= moles x molar mass

=0.0975 moles x 35.45 g/mol = 3.456 g