Question

In the example in the lesson, 0.10 mole of sodium chloride or magnesium chloride or aluminum chloride was added to one liter of water. How many moles of each chloride are in one milliliter of the respective solutions?

Hint: There is 0.10 mole per liter. Recall how many milliliters are in a liter and divide 0.10 by that number. (Remember to use the proper number of significant figures.)

______ moles/mL

Answer 1

) NaCl in water gives Na+ and Cl- so one mole of NaCl in water will give 1 mole of Cl-. So 0.10 moles will give: 0.10 moles/ml of Cl.

2) MgCl2 in water gives Mg2+ and 2 Cl- so one mole of MgCl2 in water will give 2 moles of Cl-. So 0.10 moles give: 0.20 moles/ml of Cl.

3) AgCl3 in water gives Ag3+ and 3 Cl- so one mole of AgCl3 in water will give 3 moles of Cl- .So 0.10 moles give: 0.30 moles/ml of Cl.

Answer 2

0.10/1000 = 0.00010