Jose’s lab instructor gives him a solution of sodium phosphate that is buffered to a ph of 4. because of an error that he made while calibrating the ph meter, jose’s measurements of the ph of the sodium phosphate solution are 5.4, 5.4, and 5.4. which statement best describes his results?

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 :