2. QUESTION 1
A certain product contains benzalkonium chloride in a concentration of
1:5000 w/v . How many milliliters of a 17% stock solution of
benzalkonium chloride should be used in preparing 4 liters of the
product?
4. QUESTION 2
A 1:750 w/v solution of benzalkonium chloride diluted with purified
water in a ratio of 3 parts of the benzalkonium solution and 77 parts of
purified water is recommended for bladder and urethral irrigation
What is the ratio strength of benzalkonium chloride in the final
dilution?
6. QUESTION 3
How many milliliters of a suspension base must be mixed with 250 mL
of a paroxetine (PAXIL) oral suspension, 10 mg/5 mL, to change its
concentration to 0.1% w/v?
8. QUESTION 4
An insect venom concentrate for immunotherapy contains 100 µg/mL.
How many milliliters of water should be added to 1.2 mL of the venom
concentrate to yield a 1:100000 dilution
12. QUESTION 6
Rx Lactic Acid 10% w/v
Salicylic Acid 10% w/v
Flexible Collodion q.s. 15 mL
Sig. For wart removal. Use externally as directed
How many milliliters of an 85% w/w solution of lactic acid with a
specific gravity of 1.21 should be used in preparing the prescription?
14. QUESTION 7
In using isoproterenol hydrochloride solution (1:5000 w/v), 1 mL of the
solution is diluted to 10 mL with sodium chloride What is the
percentage concentration of the diluted solution?
16. QUESTION 8
How many milliliters of water should be added to 100 mL of a 1:125
w/v solution to make a solution such that 25 mL diluted to 100 ml
will yield a 1:4000 dilution
18. QUESTION 9
A pharmacist mixes 100 mL of 38% w/w hydrochloric acid with enough
purified water to make 360 mL. If the specific gravity of hydrochloric
acid is 1.20, calculate the percentage strength (w/v) of the resulting
dilution.
20. QUESTION 10
If 100 mg of a 1:10 trituration of mechlorethamine hydrochloride
(MUSTARGEN) are diluted to 10 mL with water for injection, how many
milliliters of the injection should be administered to 132-lb. patient if
the dose of mechlorethamine hydrochloride is 0.1 mg/kg?
