Question

If 3.2 moles of NaCl are dissolved in enough water to make a 0.98-liter solution, what is the molarity of the solution?

0.31 M NaCl
0.77 M NaCl
1.3 M NaCl
3.3 M NaCl

Answer 1

Number of moles = 3.2 moles

Volume = 0.98 L

Therefore:

M = n / V

M = 3.2 / 0.98 => 3.3 M

Answer D

Answer 2

Molarity of solution = moles / volume (in liters)
= 3.2 / 0.98
= 3.3 M NaCl
The answer is 3.3 M NaCl