WEEK 9-11

Question 1

It expresses the concentration of weak solution

Answer 1

RATIO STRENGTH

Question 2

%w/v if the amount of solute (g) is unknown

Answer 2

Amount of solute = %w/v in decimal x amount of solution (mL)

Question 3

%w/v if the amount of solution is unknown

Answer 3

Amount of solution (mL) = amount of solute (g) / %w/v in decimal

Question 4

Percent volume-in-volume (%v/v) formula

Answer 4

Percent volume-in-volume (%v/v) = amount of solute (mL) / amount of solution (mL) x 100

Question 5

%v/v if the amount of solution is unknown

Answer 5

Amount of solution (mL) = amount of solute (mL) / %v/v in decimal

Question 6

Percent weight-in-volume (w/v) formula

Answer 6

Percent weight-in-volume (%w/v) = amount of solute (g) / amount of solution (mL) x 100

Question 7

Percent weight-in-weight (w/w) formula

Answer 7

Percent weight-in-weight (%w/w) = amount of solute (g) / amount of solution (g) x 100

Question 8

Other name for concentration

Answer 8

RATIO STRENGTH

Question 9

%w/v if the amount of solute (g) is unknown

Answer 9

Amount of solute (g) = %w/w expressed in decimal x amount of solution (g)

Question 10

%w/w if the amount of solution is unknown

Answer 10

Amount of solution (g) = amount of solute (g) / %w/v in decimal

Question 11

The _______ in the strength of a commercially available pharmaceutical product may be desired to treat a particular patient, based on the patient’s age (e.g, pediatric or elderly) or medical status, or to assess a patient’s initial response to a new medication

Answer 11

REDUCTION

Question 12

Percent concentrations

Answer 12

• PERCENT WEIGHT-VOLUME (W/V)
• PERCENT VOLUME-IN-VOLUME (V/V)
• PERCENT WEIGHT-IN-WEIGHT (W/W)

Question 13

Ratio strength for solids in liquids

Answer 13

1g of solute or constituent in 1000mL of solution or liquid preparation

Question 14

Ratio strength for liquids in liquids

Answer 14

1mL of constituent in 1000mL of solution or liquid preparation

Question 15

A method used to determine the quantities of ingredients of differing strengths needed to make a mixture of a desired strength

Answer 15

ALLIGATION ALTERNATE

Question 16

Strengths of very dilute solutions

Answer 16

PARTS PER MILLION (ppm) AND PARTS PER BILLION (ppb)

Question 17

• Express the number of milligrams of substance in 100 mL of liquid
• Denotes the concentration of a drug or natural substance in biologic fluid, as in blood

Answer 17

MILLIGRAMS PERCENT

Question 18

%w/v if the amount of solute (mL) is unknown

Answer 18

Amount of solute (mL) = %v/v expressed in decimal x amount of solution (mL)

Question 19

Twice the percentage of alcohol

Answer 19

PROOF STRENGTH

Question 20

Are concentrated solutions of active (e.g., drug) or inactive (e.g., colorant) substances and are used by pharmacists as a convenience to prepare solutions of lesser concentration

Answer 20

STOCK SOLUTIONS

Question 21

Two formula for proof gallon

Answer 21

1. Proof gallon = wine gallon x percentage strength of solution / 50%
2. Proof gallon = wine gallon x percentage strength of solution (proof) / 100 proof

Question 22

The ______ of a product may be desired to meet the specific medication needs of an individual patient

Answer 22

STRENGTHENING

Question 23

What are the three methods where altering product strength may be solved

Answer 23

1. INVERSE PROPORTION
2. THE EQUATION -> Q1 x C1 = Q2 x C2
3. TRADITIONAL CALCULATIONS

Question 24

Is an aqueous solution containing 50% (v/v) of alcohol

Answer 24

PROOF SPIRIT

Question 25

Two types of alligation

Answer 25

ALLIGATION MEDIAL AND ALLIGATION ALTERNATE

Question 26

Is an arithmetical method of solving problems that involves the mixing of solutions or mixtures of solids of different percentage strengths

Answer 26

ALLIGATION

Question 27

This is a method by which the “weighted average” strength of a mixture of two or more substances of known quantity and concentration may be calculated

Answer 27

ALLIGATION MEDIAL