CO-N RI ONa+AgNO3+Na2cO3→ CO一NH RI CO--- ONa+ NaHCO3 NaNO3 CO-N g R CO- CONa AgNO3 R C-N A R CO-N C-O+ NaNO3CO N C CO N C R1 R2 ONa Ag + NaHCO3 + NaNO3 CO NH C CO N C R1 R2 ONa+ AgNO3 + Na2CO3 NaNO3 + CO N C CO N C R1 R2 O Ag Ag + AgNO3 CO N C CO N C R1 R2 ONa Ag