if the density of a 3 M aq solution of NaCl is 1.25 g/ml, what will be its molality?
Dear student,
3M solution means 1000mL solution contains 3 moles of NaCl.
Hence, solution contains 3 moles of NaCl.
Mass of solvent
1074.5 g solvent contains 3 moles NaCl
​Hence 1000g solvent will contain moles
Hence molarity is 2.79 m
Hope this helps,
Regards
3M solution means 1000mL solution contains 3 moles of NaCl.
Hence, solution contains 3 moles of NaCl.
Mass of solvent
1074.5 g solvent contains 3 moles NaCl
​Hence 1000g solvent will contain moles
Hence molarity is 2.79 m
Hope this helps,
Regards