How do you calculate the molar mass of heavy water?

1 Answer
Aug 1, 2016

Simply use the molar mass of deuterium, 2.0*g*mol^-12.0gmol1

Explanation:

For deuterium oxide, ""^2H_2O2H2O, D_2OD2O, simply add up the molar masses of each element: (2xx2.014+15.999)*g*mol^-1(2×2.014+15.999)gmol1 ~= 20.0*g*mol^-120.0gmol1.

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.