For the Second-Order Reaction Below,the Initial Concentration of a Is $2 \mathrm{~A} \rightarrow \mathrm{B} \quad\quad\quad\quad\quad \text { rate }=k[\mathrm{~A}]^{2}$

question 11

Multiple Choice

For the second-order reaction below,the initial concentration of A is 1.00 M.If the concentration of A is reduced to 0.43 M after 75 seconds,what is the rate constant? $2 \mathrm{~A} \rightarrow \mathrm{B} \quad\quad\quad\quad\quad \text { rate }=k[\mathrm{~A}]^{2}$

• A) 5.2 × 10?⁴ L/mol?s
• B) 5.7 × 10?³ L/mol?s
• C) 7.6 × 10?³ L/mol?s
• D) 1.1 × 10?² L/mol?s
• E) 1.8 × 10?² L/mol?s