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For a reaction: H(2)+Cl(2)overset("hv")r...

For a reaction: `H_(2)+Cl_(2)overset("hv")rarr2HCl, " rate"=K`
Write the order and molecularity of this reaction.

Text Solution

Verified by Experts

For the reaction, r = k , indicating that the rate is independent of the concentration of reactants. Thus , it is a zero order reaction. As the reaction involves two molecules of reactants , its molecularity is 2.
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Knowledge Check

  • For the reaction: H_2(g) + Br_2(g) rarr 2HBr(g) the experimental data suggests, Rate = k,[H_2][Br_2]^(1/2) The order and molecularity of the reaction are, respectively

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    B
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    C
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    D
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  • In the reaction, H_2(g) + Cl_2(g) iff 2HCl(g)

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    B
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    D
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  • The experimentally determined rate law for the following reaction is , rate =k[H_(2)][ICl] H_(2)(g)+2ICl(g) rarr2HCl(g) +I_(2)(g) . Two probable reaction mechanisms for this reaction are - Mechanism -I : H_(2)(g)+2ICI(g)rarr2HCl(g)+I_(2)(g) Mechanism - II : H_(2)(g)+ICl(g)rarrHCl(g)+HI(g) (slow) " "HI(g)+ICl(g)rarrHCl(g)+I_(2)(g) (fast) Which one of the following statements is correct with regard to these mechanisms -

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    B
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    C
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