The volume of 400 ml of chlorine gas at 400 mm hg is decreased to 200 ml at constant temperature. what is the new gas pressure? 400 mm hg 650 mm hg 300 mm hg 800 mm hg 18. the collision of gas molecules with the walls of its container produces temperature density volume pressure

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

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 :