Answer:
For preparation of heavy water,
there is exhaustive distillation of ordinary water. It is a multistep
distillation process.
Physical properties
Exchange reactions
\[NaOH+{{D}_{2}}O\underset{{}}{\leftrightarrows}NaOD+HDO\]
\[HCl+{{D}_{2}}O\underset{{}}{\leftrightarrows}DCl+HDO\]
\[N{{H}_{4}}Cl+4{{D}_{2}}O\underset{{}}{\leftrightarrows}N{{D}_{4}}Cl+4HDO\]
\[{{H}_{2}}O\]
\[{{D}_{2}}O\]
1.
Boiling point
373 K
374.42 K
2.
Melting point
273 K
276.82 K
3.
Mol. mass
18.016
20.03
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