A Chemical Reaction That Is First-Order in X Is Observed

question 90

Multiple Choice

A chemical reaction that is first-order in X is observed to have a rate constant of 2.00 × 10^-2 s^-1.If the initial concentration of X is 1.0 M,what is the concentration of X after 196 s?

• A)0.20 M
• B)0.020 M
• C)50 M
• D)0.61 M
• E)0.98 M

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