Completeaza numai ecuatiile reactiilor posibile. Explica alegerile facute:

a. HCl + NaCO₃

b. H₂CO₃ + CaSO₄

c. HNO₃ + CH₃-COONa

d. Mg(OH)₂ +AlCl₃

e. Fe(OH)₃ + Na₂S

f. NH₃ + MgCl₂ + H₂O

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