Strength of 5.6 volume means that 5.6 is Volume strength.
Volume strength = 11.2 X molarity
Assuming 1 litre solution;
mass of solution = 1000 ml X 1 g/ml = 1000 g
mass of solute = moles X molar mass
= 0.5 mol X 34 g/mol
= 17 gm
Therefore, Option 1 is correct.
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