1.

Give the examples of first order reactions.

Answer»

Solution :FOLLOWING reactions are first order reactions.
Hyydrogenation of ethene
`C_(2)H_(4(g))toC_(2)H_(6(g))`
Rate =`-(d[R])/(dt)=k[C_(2)H_(4)]`
All natural & artificial radioactive decay of unstable nuclei take place by first order kinetics.
(i)`H_(2)O_(2)+I^(-)H_(2)O+IO^(-)`
(ii)`H_(2)O_(2)+IO^(-)toH_(2)O+I^(-)+O_(2)`
(i)`N_(2)O_(5)to2NO_(2)+(1)/(2)O_(2(g))`
(ii)`2N_(2)O_(5(g))to2N_(2)O_(4(g))+O_(2(g))`
(i)`C_(2)H_(5)I_((g))overset("decomposition")toC_(2)H_(4(g))+HCl_((g))`
(ii)`C_(2)H_(5)Cl_((g))overset("decomposition")toC_(2)H_(4(g))+HCl_((g))`
`SO_(2)Cl_(2(g))toSO_(2(g))+Cl_(2(g))`
`UNDERSET("sucrose")(C_(12)H_(22)O_(11))+H_(2)Otounderset("Glucose")(C_(6)H_(12)O_(6))+underset("Fructose")(C_(6)H_(12)O_(6))`


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