Saved Bookmarks
| 1. |
When 100 ML of 1.0 M HCl was mixed 100MI of 1.0 M NaOH in an insulated beakertat constant pressure, a temperature incease of 5.7^(0)C was measured for the beaker and its contents (Expt.1) Because th enthalpy of neutralization of a c 5.7^(0)C strong acid with a strong base is constant (-57.0 kJ moL- I), this experiment could be used to measure the calorimeter constant. In a second experiment (Expt.2) , 100 ML of 2.0 M acetic acid (K_(a) =2.0 xx 10^(-5)) was mixed with 100 ML of 1.0 m NaOH (under identicalconditions to Expt. 1) Where a temperaturerise of 5.0^(0)C was measured. (Consider heat capcity of all solution as 4.2 Jg^(-1) and density of all solution as 1.0 gmL^(-1)) Enthalpy of dissociation (in KJ Mol^(-1)) of acetic acid obtained from Expt, 2 is |
|
Answer» `1.0` |
|