Consider the following chemical equation and mathematical equations when answeri

Question

Consider the following chemical equation and mathematical equations when answering this question: 2NO2 (g) 2NO (g) + 02 (a) mathematical equation 1: rate-(AINO21/At) mathematical equation 2: rate-(112) ( [NO2] , t ) mathematical equation 3: rate = k [NO2 mathematical equation 4: In lNO2] t=-kt + ln[NO20 mathematical equation 5: (1/INO2h)-kt(1/ [NO2lo) Which mathematical equation would you use to solve the following word problem? Look at the the high-lighted key words to make your decision. You will not be calculating any numerical answer. reaction, how much NO2 is remaining after the reaction has run for 10 seconds. The starting concentration of NO2 was 0.80 M. (k-0.028 1/s)

Explanation / Answer

Since it is a first order reaction, hence eqn. 3 & 5 are automatically out. eqn 1 will help you calculate the rate of reaction not the amount of reactant. Same will be the case for eqn. 2.

Eqn.4 will help you in solving the problem given.

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