Chemistry: Gas Laws Problems!

Answer : The final volume at STP is, 1000 L

Explanation :

According to the Boyle's, law, the pressure of the gas is inversely proportional to the volume of gas at constant temperature and moles of gas.

or,

where,

= initial pressure = 1520 mmHg = 2 atm    (1 atm = 760 mmHg)

= final pressure at STP = 1 atm

= initial volume = 500.0 L

= final volume at STP = ?

Now put all the given values in the above formula, we get:

Therefore, the final volume at STP is, 1000 L

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 :