1) C→CH₄→CO₂→Na₂CO₃
C+2H₂=CH₄
CH₄+2O₂=CO₂+2H₂O
CO₂+Na₂O=Na₂CO₃
2) NO→NO₂→HNO₃→KNO₃
2NO+O₂=2NO₂
4NO₂+2H₂O+O₂=4HNO₃
HNO₃+KOH=KNO₃+H₂O
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Verified answer
1) C→CH₄→CO₂→Na₂CO₃
C+2H₂=CH₄
CH₄+2O₂=CO₂+2H₂O
CO₂+Na₂O=Na₂CO₃
2) NO→NO₂→HNO₃→KNO₃
2NO+O₂=2NO₂
4NO₂+2H₂O+O₂=4HNO₃
HNO₃+KOH=KNO₃+H₂O