Помогите решить то что подчеркнуто!

2.а) CH3COOH+Na2CO3=2CH3COONa+H2CO3б) 2CH3COOH+Ca=(CH3COO)2Ca+H2в) 2HCOOH+MgO=(HCOO)2Mg+H2Oг) CH3COOH+Cl2=CH2ClCOOH+HClд) HCOOH+CH3OH=HCOOCH3+H2Oе) CH3COOH+KOH=CH3COOK+H2O5.Na2CO3+2HCOOH=2HCOONa+H2CO3n(Na2CO3)=5.3/106=0.05 мольn(Na2CO3)=2n(HCOONa)=0.1 мольm(HCOONa)=0.1*68=6.8 гр1.2CH3COOH+CaO=(CH3COO)2Ca+H2O(CH3COO)2Ca+2HCl=2CH3COOH+CaCl22CH3COOH+Zn=H2+(CH3COO)2Zn5.а) CH3CH2COOH+Br2=CH3CHBrCOOH+HBrб) CH3COOH+CH3OH=CH3COOCH3+H2Oв) C17H35COOH+KOH=C17H35COOK+H2O