CLASS 11 CHEMISTRY CHAPTER 8-REDOX REACTIONS
1. Assign oxidation number to the underlined elements in each of the following species:(a)NaH2 P O4(b)NaH SO4(c)H4 P2O7(d)K2MnO4(e)CaO2(f)NaBH4(g)H2S2O7(h)KAl(SO4)2 ⋅ 12H2O Answer:(a) Let the oxidation number of P be x.We know that,Oxidation number of Na = +1Oxidation number of H = +1Oxidation number of O = –2NaH2PO4 Then, we have1(+1)+ 2 (+1) + 1(x) + 4(−2)=0⇒1+2+x−8=0⇒x=+5Hence, the (b)Then, we have1(+1) +1(+1) …