a laboratory solution is made of water and ethylene glycol. How could one prepare 150 ml of a 40% ethylene glycol solution?
In this problem it is not clear whether 40% is by volume (v/v) or w/v %. So it is solved in both the ways.
V/V% means V mL of solute is present in 100 mL of the solution.
Volume of solute = V mL
Volume of solution = 100 mL
Volume of the solvent= (100-V) mL
W/V % means w g of solute is present in 100 mL of the solution.
Weight of the solute = w grams
Volume of the solution= 100 mL
Here we have assumed that volume of solution doesn't change after addition of the solute
a laboratory solution is made of water and ethylene glycol. How could one prepare 150 ml...
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