How do you calculate the molar mass of heavy water?

1 Answer
anor277
Aug 1, 2016

Simply use the molar mass of deuterium, #2.0*g*mol^-1#

Explanation:

For deuterium oxide, #""^2H_2O#, #D_2O#, simply add up the molar masses of each element: #(2xx2.014+15.999)*g*mol^-1# #~=# #20.0*g*mol^-1#.

Deuterium oxide is relatively cheap, certainly it is cheap as deuterated solvents go. It is commonly used to introduce a deuterium label into a compound.

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