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precizeaza care dintre cele 4 reactii chimice nu este posibilă:
a) 2CH3-COOH+CuO--->(-H2O) (CH3-COO)2Cu
b) CH3-COOH+Ag--->CH3-Ag+1/2H2
c) CH3-COOH+KOH--->(-H2O)CH3-COOK
d) CH3-COOH+Na--->CH3-COONa+1/2H2
Dau coroană!Va rog