At Elevated Temperatures,nitrogen Dioxide Decomposes to Nitrogen Oxide and Oxygen

question 61

Multiple Choice

At elevated temperatures,nitrogen dioxide decomposes to nitrogen oxide and oxygen: NO₂ (g) → NO (g) + O₂ (g)
The reaction is second order in NO₂ with a rate constant of 0.543 M^-1s^-1at If the initial [NO₂] is it will take ________ s for the concentration to drop to

• A)3.34
• B)0.0880
• C)2.29
• D)0.299
• E)17.5

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