Nice to meet u
I am not good either.... did touch any science for a long time. But i gonna take an University entryexam this July, so i have to pick up my book again ;(
1) Hydrolysis is a chemical process that molecule is broken down in to parts by the addition of water. For example the hydrolysis of ester
2) Water molecules are covalent compounds H-O-H, however it undergoes slight ionization to form a very small amount of hydrogen ions and hydroxide ions. but the degree of ionization is so small that the electrical conductivity of water is hard to be detected.( it is an explaination from my O-Level text book, i remember that there is a much bettee explaination in A-level, but i havent come to that yet)
3)MnO4-(purple) -> Mn2+(colourless), in acid/ alkaline medium, KMnO4 can perform its reducing property as H2O. H+/OH- are provided.
4) hm.... i dont know this reaction