Express 2.5M NaCl as a percent solution. what is the molar concentration of a 10% NaCl solution?
Chemistry - DrBob222, Sunday, September 18, 2011 at 6:16pm
What kind of percent is that? percent w/v
2.5M means 2.5 moles NaCl/L soln.
grams = moles x molar mass
So yo have grams/L, convert to g/100 mL and that is percent NaCl.
10%w/v means 10g NaCl/100 mL which makes it 100 g NaCl/L soln.
100 g = ? moles. moles = g/molar mass so that is the molarity.
Chemistry - dorcas, Friday, February 8, 2013 at 3:57am