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The reaction between A and B is first order with respect to A and zero order with respect to B. Fill in the blanks in the following table - CBSE (Science) Class 12 - Chemistry

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Question

The reaction between A and B is first order with respect to A and zero order with respect to B. Fill in the blanks in the following table:

Experiment A/ mol L−1 B/ mol L−1 Initial rate/mol L−1 min−1
I 0.1 0.1 2.0 × 10−2
II -- 0.2 4.0 × 10−2
III 0.4 0.4 --
IV -- 0.2 2.0 × 10−2

Solution

The given reaction is of the first order with respect to A and of zero order with respect to B.

Therefore, the rate of the reaction is given by,

Rate = [A]1 [B]0

⇒ Rate = [A]

From experiment I, we obtain

2.0 × 10−2 mol L−1 min−1 = k (0.1 mol L−1)

⇒ k = 0.2 min−1

From experiment II, we obtain

4.0 × 10−2 mol L−1 min−1 = 0.2 min−1 [A]

⇒ [A] = 0.2 mol L−1

From experiment III, we obtain

Rate = 0.2 min−1 × 0.4 mol L−1

= 0.08 mol L−1 min−1

From experiment IV, we obtain

2.0 × 10−2 mol L−1 min−1 = 0.2 min−1 [A]

⇒ [A] = 0.1 mol L−1

  Is there an error in this question or solution?

APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 12 (2018 to Current)
Chapter 4: Chemical Kinetics
Q: 12 | Page no. 118
Solution The reaction between A and B is first order with respect to A and zero order with respect to B. Fill in the blanks in the following table Concept: Integrated Rate Equations - First Order Reactions.
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