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Developing strong trituration skills is essential for students and professionals working in fields such as pharmacy, chemistry, and material sciences. Practice problems help reinforce understanding and improve proficiency. Below are some practice problems with detailed solutions to sharpen your trituration skills.
Practice Problem 1: Basic Trituration
Problem: You are given 5 grams of a crystalline compound that needs to be triturated with 10 grams of an inert diluent to prepare a uniform mixture. How much of the mixture will you obtain after thorough trituration?
Solution: The total weight of the mixture is the sum of the weights of the compound and the diluent.
Weight of compound = 5 g
Weight of diluent = 10 g
Total weight = 5 g + 10 g = 15 grams
Practice Problem 2: Trituration with Different Ratios
Problem: A pharmacist needs to triturate 2 grams of a drug with 8 grams of diluent to prepare a homogeneous mixture. What is the percentage of the drug in the mixture?
Solution: First, find the total weight of the mixture.
Total weight = 2 g + 8 g = 10 g
Next, calculate the percentage of the drug:
Percentage of drug = (Weight of drug / Total weight) × 100 = (2 g / 10 g) × 100 = 20%
Practice Problem 3: Trituration of Multiple Components
Problem: You are preparing a mixture containing 3 components: 4 grams of component A, 6 grams of component B, and 10 grams of component C. How much total mixture will you have after trituration?
Solution: Sum the weights of all components:
Total mixture weight = 4 g + 6 g + 10 g = 20 grams
Practice Problem 4: Adjusting Ratios for Trituration
Problem: To prepare a mixture with 25% drug content, how much drug and diluent are needed if the total mixture weight is 40 grams?
Solution: Calculate the weight of the drug:
Drug weight = 25% of 40 g = 0.25 × 40 g = 10 grams
Remaining weight for diluent = 40 g – 10 g = 30 grams
Practice Problem 5: Trituration Efficiency
Problem: During trituration, 2 grams of a drug are mixed with 8 grams of diluent. If after mixing, 0.2 grams of the drug is lost due to spillage, what is the effective percentage of drug in the final mixture?
Solution: First, determine the amount of drug remaining:
Remaining drug = 2 g – 0.2 g = 1.8 g
Total weight of final mixture = 1.8 g + 8 g = 9.8 grams
Effective percentage of drug = (1.8 g / 9.8 g) × 100 ≈ 18.37%
Conclusion
Practicing these problems enhances understanding of trituration techniques and helps in achieving uniform mixtures essential in pharmaceutical preparations. Regular practice with varied ratios and scenarios will improve accuracy and efficiency.