What are the standard temperature and pressure conditions enthalpy is usually measured under?

The correct answer is D: 100kPa and 298 K.

The enthalpy of a system is a thermodynamic quantity which can be regarded as the total energy content of the system.

The enthalpy of a system is measured under standard conditions. The standard conditions include;

Hence, the standard temperature and pressure conditions enthalpy is usually measured under are 100kPa and 298 K.

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answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

answer7,570,82356 cubic centimeters;