in the definition of calorimetry why particularaly 14.5-15-5 degree celsius is the number specified?
in the definition of calorimetry why particularaly 14.5-15-5 degree celsius is the number specified?
Calorie is simply energy required to increase the temp. Of water by 1°c at standard atmosphere which is approximately 4.185 but there are may definations of calorific value
1)the amount of energy equal to exactly 4.184 joules = thermo chemical calorie
2)the amount of energy required to warm one gram of air-free water from 3.5 to 4.5 °C at standard atmospheric pressure.=4°c calorie
3)the amount of energy required to warm one gram of air-free water from 14.5 to 15.5 °C at standard atmospheric pressure. Experimental values of this calorie ranged from 4.1852 to 4.1858 J. = 15°c calorie.
So, it's standard value which is obtained from experiments.there are several other definitions
Calorie is simply energy required to increase the temp. Of water by 1°c at standard atmosphere which is approximately 4.185 but there are may definations of calorific value
1)the amount of energy equal to exactly 4.184 joules = thermo chemical calorie
2)the amount of energy required to warm one gram of air-free water from 3.5 to 4.5 °C at standard atmospheric pressure.=4°c calorie
3)the amount of energy required to warm one gram of air-free water from 14.5 to 15.5 °C at standard atmospheric pressure. Experimental values of this calorie ranged from 4.1852 to 4.1858 J. = 15°c calorie.
So, it's standard value which is obtained from experiments.there are several other definitions
