1. Oxidized and carbonate is reduced
2. Reduced and water is oxidized
3. Neither reduced nor oxidized
4. Reduced and Oxidized
Reduced and Oxidized
1. FeS2+4N2→8SO2+2Fe2O3
2. 4FeS2+6O2→2Fe2O3+8SO2
3. 4FeS2+11O2→2Fe2O3+8SO2
4. 2FeS2+11O2→Fe2O3+6SO2
4FeS2+11O2→2Fe2O3+8SO2
1. + 3
2. + 6
3. 0
4. - 3
+ 6
1. -5
2. +6
3. +2
4. -2
+6
1. Accept electrons
2. Accept protons
3. Donate electrons
4. Donate protons
Donate electrons
1. H2SO4 with NaOH
2. In atmosphere, O3 from O2 by lightning
3. Nitrogen oxides from nitrogen and oxygen by lightning
4. Evaporatio
Nitrogen oxides from nitrogen and oxygen by lightning
1. HNO3
2. HNO2
3. HI
4. H2SO4
HNO2
1. Exothermic
2. Endothermic
3. Neither exothermic nor endothermic i.e. ΔH=0
4. Can be either exothermic or endothermic
Exothermic
1. 0
2. + 1
3. + 4
4. + 2
0
1. Zn
2. H2O
3. NO3-
4. NH4+
NO3-