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):

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:
• The half life of a first order reaction is 4 years. What is its shelf life (in years)?
• In chemical kinetics, the rate of a reaction is expressed as (-dc/dt), where dc refers to the concentration. Whose concentration does it refer to?
• Which one of these methods is the MOST effective in preventing the rate of hydrolysis?
• In a chemical reaction, the rate constant is independent of the initial concentration. Which one of them is the order?
• Emulsion have a ......... shelf life
• Which of the following expression is correct for the determination of shelf life for a first order decomposition?
• ........... is the time necessary for the concentration of the reactant to decrease to 90% of its original concentration.
• The solid state decomposition of aspirin in presence of moisture follows the order: