Determine volume from ratio strength and drug quantity

3. Percent, Ratio, mg/mL, PPM, PPB 3.2) Ratio 3.2.1) Ratio - General

3.2.1.1) Ratio - General Normal 1


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Determine the volume of a solution which will contain 3.111 g of drug, if its strength is expressed as 1 : 180.


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lb equals 560 mL kg

    1 : 180 means, 1 g of drug is present in each 180 mL of the solution.

    To determine the volume of the solution which contains 3.111 gram of drug, we can write
    `(1 \quad g)/(180 \quad mL)=(3.111 \quad g)/x therefore x = 560 ` mL.

    Answer.