Mohd Mujtaba
Last Activity: 7 Years ago
Answer is 21. There is no change in nfactor of hydrogen and oxygen. So we have to see the change in oxidation number of nitrogen. In hno3 oxidation state of n is +5. While in no it is +2.so change in oxidation number =3. So equivalent weight of hno3=mass of hno3/3=(1+14+16×3)/3=""21."" Thank ☺☺☺☺☺☺☺☺