The rate of the reaction in terms of the \"appearance of product\" includes the

Question

The rate of the reaction in terms of the "appearance of product" includes the change in the concentration of the product, the time interval, and the coefficient of the product.

Consider the following reaction:

2A+3B3C+2D

The concentrations of product C at three different time intervals are given. Use the following data to determine the rate of reaction in terms of the appearance of product C between time = 0 s and time = 20 s .

Express your answer in molar concentration per second to three significant figures.

Explanation / Answer

As the rate of reaction = -1/2 d [A]/dt (decomposition of A ) =- 1/3 d[B] / dt (decomposition of B ) =

= 1/3 d[C] / dt (formation of C ) = 1/2 d[D] /dt (formation of D)

as the question ask for rate of reaction in terms of formation of C . therefore

rate of reaction = 1/3 d[C] / dt (formation of C ) = 1/3 C2-C1 /T2-T1 = 1/3 (0.0240 - 0.000)/ 20 -0

= 0.0240 /20 *3 = 0.000400( as zero after decimal does not count if a number is not placed before it ).

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