See the answer below.
Work Step by Step
a) Bonds broken: 2 C-H, 1 O=O Bonds formed: 2 C-O, 2 O-H Enthalpy of reaction: $2×413+498-2×358-2×463=-318\ kJ/mol$ It's an exothermic reaction. b) Both molecules are polar because they have asymmetrical polar bonds. c) The ones bonded to oxygen, the most electronegative atom to which a hydrogen is bonded.