In the degradation studies of aspirin suspension, the orders observed initially and at the end, respectively, are: -

Related MCQs

• The reaction rate constant (k) is 2.0 x 10-3 min.-1 for aspirin hydrolysis in 0.1 N hydrochloric acid at 1mg/ml concentration. Under same conditions, if the product contains aspirin 4 mg/ml of the initial concentration, the k value in minutes-1 will be:
• A prescription of liquid aspirin preparation contained 6.5 g/100 ml. The solubility of aspirin at 25°C is 0.33 g/100 ml. The order of reaction in the kinetic study is:
• For a flocculated suspension the degree of flocculation is observed to be one. The sedimentation volume is also 1 (one). These values, respectively, indicate the limits:
• The ratio of the sedimentation volume in case of flocculated suspension to the sedimentation volume in case of deflocculated suspension is called
• Which of the following reactions is observed in the degradation of ampicillin?
• During storage, crystal growth is observed in a suspension due to:
• Normally, ethyl acetate undergoes hydrolysis in presence of H+ and (OH)-ions. The order of the reaction observed in the acidic and alkaline solutions, respectively, are:
• The solid state decomposition of aspirin in presence of moisture follows the order:
• The specific rate constant (k) determined for aspirin hydrolysis in pH 1.0 buffer at 1 mg/ml concentration is 2.0x10-3 min-1 at 25°C. The shelf life of the product is (in minutes):
• Aspirin undergoes decomposition in a formulation. It can be prevented by: