Решите реакции, ! 1) hcooh + mg 2) hcooh + k2o 3) hcooh + cu(oh)2 4) hcooh + na2so3 5) hcooh + c2h5oh

1) 2HCOOH + mg=(HCOO)2Mg+H2
2) 2HCOOH + k2o=2(HCOO)K+H2O
3) 2HCOOH + cu(oh)2=(HCOO)2Cu+2H2O
4) 2HCOOH + na2so3 =2HCOONa+SO2+H2O
5) HCOOH + c2h5oh=HCOOC2H5+H2O