If you need to make a 5.6% solution of NaCl using 9.6g of NaCl, how many grams of water is needed?

1 Answer
Apr 27, 2016

161.8*g of water is required.

Explanation:

"Mass of sodium chloride"/"Mass of solution"xx100% = 5.6%

So (9.6*g)/"Mass of solution"= 0.056

So (9.6*g)/(0.056) ="Mass of solution"= 171.4*g

Of course the mass of solution includes the 9.6*g mass of sodium chloride. So we require 171.4*g-9,6*g" of water" = 161.8*g