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A first order reaction takes 40 min for ...

A first order reaction takes 40 min for 30% completion. Calculate `t_(1/2)`.

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JMD PUBLICATION-SAMPLE QUESTION-EXAMPLE
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  6. Why do transition metals have high enthalpies of atomization ?

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  7. Transition metals form mostly coloured compounds.Explain.

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  8. Transition elements and their compounds are found to be good catalysts...

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  9. Why Cr^(2+) is strongly reducing while Mn^(3+) is strongly oxidising ?

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  10. The d^1 configuration is very unstable in transition metal ions. Exp...

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  11. What happens when : n-butyl chloride is treated with alcoholic KOH.

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  12. What happens when - bromobenzene is treated with Mg in the presence ...

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  13. What happens when : Ethyl chloride is treated with (aq) KOH.

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  14. Methyl bromide is treated with sodium in the presence of dry ether.

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  15. What happens when : Methyl chloride is treated with KCN.

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  16. Explain the following reaction reaction : Sandmeyer's reaction.

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  17. Write the following reactions: Finkelstein reaction

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  18. Write down following name reaction : Hunsdiecker reaction

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  19. Give the following reactions: Fitting reaction

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  20. Explain the following reactions : Ulmann reaction

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