Some Basic Concepts of Chemistry - Result Question 29

####29. Among the following, the number of elements showing only one non-zero oxidation state is O,Cl,F,N,P,Sn,Tl,Na,Ti

(2010)

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Solution:

  1. The balanced chemical reaction of zinc with sulphuric acid and NaOH are

Zn+H2SO4ZnSO4+H2(g)

Zn+2NaOH+2H2ONa2[Zn(OH)4]+H2(g)

Since, one mole of H2(g) is produced per mole of zinc with both sulphuric acid and NaOH respectively, hydrogen gas is produced in the molar ratio of 1:1 in the above reactions.



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