You want to prepare a 2M solution of NaCl. To do so, you weighed out 116.886g of NaCl and then added enough water to get 500ml of solution.
Explain whether the solution prepared is of the correct concentration. If not, what should be correct procedure?

Question

You want to prepare  a 2M solution of NaCl. To do so, you weighed out 116.886g of NaCl and then added enough water to get 500ml of solution.
Explain whether the solution prepared is of the correct concentration. If not, what should be correct procedure?

aaronq · Answer

use the molarity formula to check whether or not the concentration sought was achieved.

anonymous · Answer

so, i change the mass of NaCl to number of moles of NaCl and the volume to litre and then i use the formula M= No. of moles of solute / volume of solution. after that i compare with the 2M?? is it correct?

aaronq · Answer

yes, that is correct.

anonymous · Answer

ok, thanks^^

aaronq · Answer

no problem !

alphadxg · Answer

Yup that's the correct way to do it.