A 350-mL solution contains 12.6 g #NaCl#. What is the molarity of the solution?

1 Answer
Jun 20, 2016

The molarity of the solution is 0.617 M.


Let's use this equation:


Okay, so we have a bit of work to do! The volume is given in terms of mL and we have to convert that to L by using the following conversion factor: #1L = 1000mL#

#350cancel"mL"xx(1L)/(1000cancel"mL") = 0.350L#

Now we have to express NaCl in terms of moles. We can do this by using the molar mass of NaCl (58.44 g/mol) as a conversion factor.

#12.6 cancelgxx(1mol)/(58.44g) = 0.216mol#

Now we can divide the moles by the volume to obtain the molarity like this:

# Molarity = (0.216mol)/(0.350L)#

M =0.617