a) C2H5COOH+C3H7OH--st. H2SO4--->C2H5COOC3H7+H2O
propanian propylu i woda
b) HCOOH+C2H5OH--st. H2SO4--->HCOOC2H5+H2O
metanian etylu i woda
c) CH3COOH+C5H11OH--st. H2SO4--->CH3COOC5H11+H2O
etanian pentylu i woda
d) C3H7COOH+CH3OH--st. H2SO4-->C3H7COOCH3+H2O
butanian metylu i woda