PYQ Vault
EbooksTutor

Order of reaction from initial-rate data

This type of question, asked 3 times: 11 Apr 2023, 27 Jan 2024, 5 Apr 2024. All 3 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    11 Apr 2023

    125
    For a chemical reaction A+B→A + B \rightarrow Product, the order is 1 with respect to AA and BB. The measured data are: Rate =0.10 mol L−1 s−1= 0.10\ mol{\text{ }L}^{- 1}{\text{ }s}^{- 1} when [A]=20 mol L−1\lbrack A\rbrack = 20\ mol{\text{ }L}^{- 1} and [B]=0.5 mol L−1\lbrack B\rbrack = 0.5\ mol{\text{ }L}^{- 1}; Rate =0.40 mol L−1 s−1= 0.40\ mol{\text{ }L}^{- 1}{\text{ }s}^{- 1} when [A]=x mol L−1\lbrack A\rbrack = x\ mol{\text{ }L}^{- 1} and [B]=0.5 mol L−1\lbrack B\rbrack = 0.5\ mol{\text{ }L}^{- 1}; Rate =0.80 mol L−1 s−1= 0.80\ mol{\text{ }L}^{- 1}{\text{ }s}^{- 1} when [A]=40 mol L−1\lbrack A\rbrack = 40\ mol{\text{ }L}^{- 1} and [B]=y mol L−1\lbrack B\rbrack = y\ mol{\text{ }L}^{- 1}. What is the value of xx and yy ?

    Tap an option to check your answer.

  2. Question 2

    27 Jan 2024

    52
    Consider the following data for the given reaction
    2HI(g)→H2( g)+I2( g)2HI_{(g)}\rightarrow H_{2(\text{ }g)}+I_{2(\text{ }g)}
    Experiment123
    [HI][HI] (mol L−1mol\ L^{-1})0.0050.010.02
    Rate (mol L−1s−1mol\ L^{-1}s^{-1})7.5×10−47.5 \times10^{-4}3.0×10−33.0 \times10^{-3}1.2×10−21.2 \times10^{-2}
    The order of the reaction is ____\_\_\_\_.

  3. Question 3

    5 Apr 2024

    56
    During Kinetic study of reaction 2 A+B→C+D2\text{ }A + B \rightarrow C + D, the following results were obtained:
    A[M]A\lbrack M\rbrack
    B[M]B\lbrack M\rbrack
    		initial rate of formation of DD
    I0.10.1
    6.0×10−36.0 \times10^{- 3}
    II0.30.2
    7.2×10−27.2 \times10^{- 2}
    III0.30.4
    2.88×10−12.88 \times10^{- 1}
    IV0.40.1
    2.40×10−22.40 \times10^{- 2}
    Based on above data, overall order of the reaction is ......