A 1.00 liter solution contains 0.37 M ammonia and 0.48 M ammonium perchlorate. If 0.240 moles of sodium hydroxide are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of sodium hydroxide.) A. The number of moles of NH3 will increase. B. The number of moles of NH4 will increase. C. The equilibrium concentration of H3O will remain the same. D. The pH will remain the same. E. The ratio of [NH3] / [NH4 ] will decrease.

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 :