Some Basic Concepts of Chemistry - Result Question 79

####17. The oxidation number of sulphur in S8,S2F2,H2S respectively, are

(1999)

(a) 0,+1 and -2

(b) +2,+1 and -2

(c) 0,+1 and +2

(d) 2,+1 and -2

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Solution:

  1. nO2nN2=(mO2)(MO2)(mN2)(MN2)

=0.9×60mg=54mg

where, mO2 = given mass of O2,mN2= given mass of N2, MO2= molecular mass of O2,MN2= molecular mass of N2, nO2= number of moles of O2,nN2= number of moles of N2

=[mO2mN2]2832=14×2832=732



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