For a Particular First-Order Reaction,it Takes 48 Minutes for the Concentration

question 66

Multiple Choice

For a particular first-order reaction,it takes 48 minutes for the concentration of the reactant to decrease to 25% of its initial value.What is the value for rate constant (in s^-1) for the reaction?

• A)1.0 × 10^-4 s^-1
• B)4.8 × 10^-4 s^-1
• C)6.0 × 10^-3 s^-1
• D)2.9 × 10^-2 s^-1