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

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Answer 1 · 2016-04-27T05:08:04

$161.8*g$ of water is required.

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

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 $171.4*g-9,6*g" of water"$ $=$ $161.8*g$

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