compare your experimental value for the heat of fusion of ice with the accepted value ,...

compare your experimental value for the heat of fusion of ice with the accepted value , 6.01 kJ/mol. Comment on the comparison, and try to explain your error ( if it exists). How would you change your procedure to improve its accuracy ?

Expert Solution

Heat of fuson is the amount of heat required to convert solid ice into liquid ice. Known quantiy of ice is melted by placing known volume of hot water in a platic container ( Acts like an insulator). The temperature rise of the system can be determined and latent heat of ice can be calculated by

Heat lost by hot water to reach a given final temperatue (T2) from initial temperature (T1) is given by

Mass of water* specific heat of water* (T2-T1) = Heat of fusion* mass of solid ice that is melted ( Heat absorbed by ice)

Volume of solid that is melted= final volume of water- initial volume of water

Mass of solid that is metled= volume of water ( that came from melting)* density

Latent heat of fusion = heat absorbed by water/ mass of ice.

The error exists in the density of the water that is normally assumed to be 1 g/cc. One way to overcome this problem is to measure the density of the sample by dividing the mass of water/ volume of water. Normally density is nor measured and hence density measurement is included in the procedure, we can imrprove the value of latent heat of fusion.

queen_honey_blossom answered 2 years ago

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