<Table> Physical properties of isotopologues of water <Tr> <Th> Property </Th> <Th> D O ( Heavy water ) </Th> <Th> HDO ( Semiheavy water ) </Th> <Th> H O ( Light water ) </Th> </Tr> <Tr> <Td> Freezing point </Td> <Td> 3.82 ° C ( 38.88 ° F ) ( 276.97 K ) </Td> <Td> 2.04 ° C ( 35.67 ° F ) ( 275.19 K ) </Td> <Td> 0.0 ° C ( 32 ° F ) ( 273.15 K ) </Td> </Tr> <Tr> <Td> Boiling point </Td> <Td> 101.4 ° C ( 214.5 ° F ) ( 374.55 K ) </Td> <Td> 100.7 ° C ( 213.3 ° F ) ( 373.85 K ) </Td> <Td> 100.0 ° C ( 212 ° F ) ( 373.15 K ) </Td> </Tr> <Tr> <Td> Density at STP ( g / mL ) </Td> <Td> 1.1056 </Td> <Td> 1.054 </Td> <Td> 0.9982 </Td> </Tr> <Tr> <Td> Temp. of maximum density </Td> <Td> 11.6 ° C </Td> <Td> Unverified </Td> <Td> 3.98 ° C </Td> </Tr> <Tr> <Td> Dynamic viscosity ( at 20 ° C , mPa s ) </Td> <Td> 1.2467 </Td> <Td> 1.1248 </Td> <Td> 1.0016 </Td> </Tr> <Tr> <Td> Surface tension ( at 25 ° C , N / m ) </Td> <Td> 0.07187 </Td> <Td> 0.07193 </Td> <Td> 0.07198 </Td> </Tr> <Tr> <Td> Heat of fusion ( kJ / mol ) </Td> <Td> 6.132 </Td> <Td> 6.227 </Td> <Td> 6.00678 </Td> </Tr> <Tr> <Td> Heat of vaporisation ( kJ / mol ) </Td> <Td> 41.521 </Td> <Td> Unverified </Td> <Td> 40.657 </Td> </Tr> <Tr> <Td> pH ( at 25 ° C ) </Td> <Td> 7.44 ( `` pD '' ) </Td> <Td> 7.266 ( `` pHD '' ) </Td> <Td> 7.0 </Td> </Tr> <Tr> <Td> pK ( at 25 ° C ) </Td> <Td> 7.44 ( `` pK D O '' ) </Td> <Td> Unverified </Td> <Td> 7.0 </Td> </Tr> <Tr> <Td> Refractive index ( at 20 ° C , 0.5893 μm ) </Td> <Td> 1.32844 </Td> <Td> Unverified </Td> <Td> 1.33335 </Td> </Tr> </Table>
<Table> Physical properties of isotopologues of water <Tr> <Th> Property </Th> <Th> D O ( Heavy water ) </Th> <Th> HDO ( Semiheavy water ) </Th> <Th> H O ( Light water ) </Th> </Tr> <Tr> <Td> Freezing point </Td> <Td> 3.82 ° C ( 38.88 ° F ) ( 276.97 K ) </Td> <Td> 2.04 ° C ( 35.67 ° F ) ( 275.19 K ) </Td> <Td> 0.0 ° C ( 32 ° F ) ( 273.15 K ) </Td> </Tr> <Tr> <Td> Boiling point </Td> <Td> 101.4 ° C ( 214.5 ° F ) ( 374.55 K ) </Td> <Td> 100.7 ° C ( 213.3 ° F ) ( 373.85 K ) </Td> <Td> 100.0 ° C ( 212 ° F ) ( 373.15 K ) </Td> </Tr> <Tr> <Td> Density at STP ( g / mL ) </Td> <Td> 1.1056 </Td> <Td> 1.054 </Td> <Td> 0.9982 </Td> </Tr> <Tr> <Td> Temp. of maximum density </Td> <Td> 11.6 ° C </Td> <Td> Unverified </Td> <Td> 3.98 ° C </Td> </Tr> <Tr> <Td> Dynamic viscosity ( at 20 ° C , mPa s ) </Td> <Td> 1.2467 </Td> <Td> 1.1248 </Td> <Td> 1.0016 </Td> </Tr> <Tr> <Td> Surface tension ( at 25 ° C , N / m ) </Td> <Td> 0.07187 </Td> <Td> 0.07193 </Td> <Td> 0.07198 </Td> </Tr> <Tr> <Td> Heat of fusion ( kJ / mol ) </Td> <Td> 6.132 </Td> <Td> 6.227 </Td> <Td> 6.00678 </Td> </Tr> <Tr> <Td> Heat of vaporisation ( kJ / mol ) </Td> <Td> 41.521 </Td> <Td> Unverified </Td> <Td> 40.657 </Td> </Tr> <Tr> <Td> pH ( at 25 ° C ) </Td> <Td> 7.44 ( `` pD '' ) </Td> <Td> 7.266 ( `` pHD '' ) </Td> <Td> 7.0 </Td> </Tr> <Tr> <Td> pK ( at 25 ° C ) </Td> <Td> 7.44 ( `` pK D O '' ) </Td> <Td> Unverified </Td> <Td> 7.0 </Td> </Tr> <Tr> <Td> Refractive index ( at 20 ° C , 0.5893 μm ) </Td> <Td> 1.32844 </Td> <Td> Unverified </Td> <Td> 1.33335 </Td> </Tr> </Table>
at what temperature would a sample of heavy water freeze
at what temperature would a sample of heavy water freeze
3.82 ° C ( 38.88 ° F ) ( 276.97 K )
3.82 ° C ( 38.88 ° F ) ( 276.97 K )