Se disuelven 15 gramos de carbonato de sodio de 140 gramos de agua, luego se le añaden 50 ml de solución de 40% m/m y densidad de 1,7 g/ml. Determina la nueva % m/m de la solución resultante

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 :

its first and third is your answer i did the qustion the fourth isnt right