Homework Help: Chemistry

Posted by Kate on Sunday, April 22, 2012 at 9:43am.

A chemist wants to be a supercook and wants to create 8%(m/v) acetic acud solution to be "extra strength" vinegar. if pure acetic acid Is a liquid density of 1.049 g/ml. how many ml of acetic acid should be dissolved to male 500 ml of 8% acetic acid?

Calculate grams of acetic acid needed by using %m/v formula then use density conversion factor given

Chemistry - DrBob222, Sunday, April 22, 2012 at 12:46pm
8% m/v means 8 g acetic acid/100 mL soln. You want 500 mL soln so you want 5*8 = 40 g acetic acid.
volume = mass/density. You know mass and density, solve for volume needed for 40 grams

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