CHXI09:HYDROGEN
315693
Identify the incorrect statement regarding heavy water:
1 It reacts with \(\mathrm{\mathrm{SO}_{3}}\) to form deuterated sulphuric acid \(\mathrm{\left(\mathrm{D}_{2} \mathrm{SO}_{4}\right)}\).
2 It is used as a coolant in nuclear reactions.
3 It reacts with \(\mathrm{\mathrm{CaC}_{2}}\) to produce \(\mathrm{\mathrm{C}_{2} \mathrm{D}_{2}}\) and \(\mathrm{\mathrm{Ca}(\mathrm{OD})_{2}}\).
4 It reacts with \(\mathrm{A l_{4} C_{3}}\) to produce \(\mathrm{C D_{4}}\) and \(\mathrm{\mathrm{Al}(\mathrm{OD})_{3}}\).
Explanation:
Heavy water acts as moderator. This is used in nuclear reactors to slow down the speed of fast moving neutrons.