Drug X becomes ineffective after 50 % decomposition. The original concentration of drug in a bottle was 16 mg / mL which becomes 4 mg / mL in 12 months. The expiry time of the drug in months is __________ Assume that the decomposition of th

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Drug X becomes ineffective after 50 % decomposition. The original concentration of drug in a bottle was 16 mg / mL which becomes 4 mg / mL in 12 months. The expiry time of the drug in months is __________ Assume that the decomposition of the drug follows first order kinetics.

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Correct answer: B. 6

Drug X 1st order Product Initial concentration of drug =16 mg / mL Concentration of drug after 12 months =4 mg / mL Half life of drug = 6 months Drug become ineffective after 50 % decomposition. The expiry time of drug =6 months

Drug X becomes ineffective after 50 % decomposition. The original concentration of drug in a bottle was 16 mg / mL which becomes 4 mg / mL in 12 months. The expiry time of the drug in months is __________ Assume that the decomposition of the drug follows first order kinetics.

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