At 25°C the Rate Constant for the First-Order Decomposition of a Pesticide

question 118

Multiple Choice

At 25°C the rate constant for the first-order decomposition of a pesticide solution is 6.40 × 10^-3 min^-1.If the starting concentration of pesticide is 0.0314 M, what concentration will remain after 62.0 min at 25°C?

• A)1.14 × 10^-1 M
• B)47.4 M
• C)-8.72.0 M
• D)2.11 × 10^-2 M
• E)2.68 × 10^-2 M