Gases questions | form five Chemistry

When 0.5dm³ of O₂ and 1.0dm³ of CO₂ were mixed at 27^oC, the total pressure in the vessel was found to be 1.2 atm. Calculate;

1. partial pressure of each gas
2. the mass of each gas

Answer / Solution

UNSOLVED

Nitrogen and oxygen combine endothermically at elevetated temperature  according to the equation 2N_2(g)+O_2(g) 2NO_2(g). If the equilibrium constant for the reaction is 4.3x10^-3 at 3000^oC and 1 atm, calculate the composition of each in the equilibrium if 2 moles of each nitrogen and oxygen were heated.

Answer / Solution

UNSOLVED

When 20.85g of PCl₅ was heated in a sealed tube of 4dm³ volume , the pressure in the vessel was found to be 1.5atm. At this pressure it was found that PCl₅ dissociated to 80%. Calculate the partial pressure of each gas.

Answer / Solution

UNSOLVED

1. State the following laws:

1. Graham`s law of gas diffusion
2. Charles` law
3. Boyle`s law.

2. Identify two laws in (a) above and show how they can be combined to give a single gas equation.

Answer / Solution

UNSOLVED

A chloride of phosphorus is found to diffuse in the gaseous state more slowly by a factor of 2.216 than nitrogen under the same conditions.

1. Calculate the relative molecular mass of chloride.
2. Given that chloride molecule contains one atom of phosphorus, write down its formula.

Answer / Solution

UNSOLVED