reducing and enlarging formulas; diluting and concentration

who may have to reduce or enlarge formulas for pharmaceutical preparations in the course of their professional practice or manufacturing activities

pharmacists

the strength of pharmaceutical preparations may be increased or decreased by changing the proportion of active ingredient to the whole

true

increasing strength is called what

concentration

decreasing strength is called what

diluting

ingredient contained remains constant, but the volume it is contained within increases is what

dilution

could be performed by mixing the mixture with a more diluted version is what

dilution

percentage of the ingredients as a whole decreases as a result

dilution

either the ingredient contained remains constant, but the volume it is contained within decreases (evaporation of solvent) is what

concentration

the percentage of the ingredient as a whole increase

concentration

it could be performed by adding more ingredients to the mixture (which changes the total volume and could complicates the calculation

concentration

concentrated solutions that are frequently prepared by the pharmacist (or obtained commercially) for ease of preparation of commonly used ingredients is what

stock solutions

usually prepared on w/v basis, expressed as ratio strength

stock solutions

stock solutions for acids (concentrated) are usually expressed as what

w/w %

diluted acids are usually expressed as what

w//v %

what is used when mixing two or more preparations of differing strengths to yield an intermediate strength

alligation

what are the methods of alligation

alligation medial

alligation alternate

all the ingredients and proportions are known, we need to calculate the concentration of mixture is what method

alligation medial

where the target concentration is known, we need to calculate the proportion of each components

alligation alternate