Exhibit 13-16 Consider the Reaction Below, Which Follows a Second

question 95

Multiple Choice

Exhibit 13-16 Consider the reaction below, which follows a second order rate law, to answer the following question(s) .
2 NO₂ (g) →2 NO (g) + O₂ (g)
Assume the initial concentration of NO₂ equals 0.100 M and the rate constant, k , equals 0.630 M ^{- 1}s ^{- 1}.
-Refer to Exhibit 13-16. How long would it take for the NO₂ concentration to reduce to 0.0250 M?

• A) 0.0210 seconds
• B) 0.119 seconds
• C) 2.20 seconds
• D) 18.9 seconds
• E) 47.6 seconds

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