Y_Shun SG lucky they never say want equations...if not i gg. but i only say it produces rubidium hydroxide.... hmm then i wrote the reaction with oxide incase.
ultranova3 SG H2O2 is a lewis acid but HCl is a strong Bronsted acid. In your question, it is assumed that the term acid refers to Bronsted acid. You think too much... too complicated
abyone SG so how? I not really sure how well I did. Haisss… I just hope that 70%+ gurantee A2. Anyone who has friends who did very well?
PwnYou SG me took the paper too. lost much marks on mole question, and the hydrogen chloride question too. and i wrote ammonia + water -> ammonium hydroxide why molten state ionic compound can conduct electricity? i wanted to write the txtbk says so, but dint lah made a wild guess that electricity can pass through the spaces the ions have between them.. haiz, section B was rather easy though
unclebutcher SG yeah extremely negative enthalpy...+ hig hsurface area and energy of steam anyway, post qns you guys dont know and i will try to answer, got an A for chem promotional exam (:
felirox SG my friend told me chem paper was mostly testing your concept…what does she meant by concepts???
Coffee Gabriel SG It means using your brain juice instead of memorising & throw (a.k.a do ten yr-memorise text book )
Y_Shun SG phy is understanding...lols chem is memorising. but some parts of phy is oso memorising if you do not understand.
abyone SG jia lat lar… i think i’ll get around 45/65 for Chem paper… Can get A2 after moderation a not for Chemistry? T.T
ultranova3 SG Rb2O is very highly unlikely to be produced that way. Rubidium oxide reacts immediately on contact with water. 2Ru(s) + 2H2O(g) --> 2RuOH(aq) + H2(g)
