Помогите!! срочно нужно!!
2HCOOH + Ca = (HCOO)2Ca + H2 2HCOOH + Na2O = 2HCOONa + H2O 2HCOOH + Zn(OH)2 = (HCOO)2Zn + H2O HCOOH + NaOH = HCOONa + H2O 2HCOOH + Na2CO3 = 2HCOONa + H2O + CO2