List of top Chemistry Questions on Partial pressure

The correct order of boiling points of hydrogen halides is: 

A container contains 1g H₂ gas and 1g O2 gas. What is the ratio of partial pressure of H₂ and O₂ (PH2/PO2)?

At T(K), 0.1 moles of a non-volatile solute was dissolved in 0.9 moles of a volatile solvent. The vapour pressure of pure solvent is 0.9 . What is the vapour pressure (in ) of the solution? 

The reaction:

\[ \text{H}_2\text{O}(g) + \text{Cl}_2\text{O}(g) \rightleftharpoons 2 \text{HOCl}(g) \]

is allowed to attain equilibrium at 400K. At equilibrium, the partial pressures are given as:

  • \( P_{\text{H}_2\text{O}} = 300 \) mm Hg
  • \( P_{\text{Cl}_2\text{O}} = 20 \) mm Hg
  • \( P_{\text{HOCl}} = 60 \) mm Hg

The value of \( K_p \) for the reaction at 400K is:

\[ K_p = \frac{P_{\text{HOCl}}^2}{P_{\text{H}_2\text{O}} \cdot P_{\text{Cl}_2\text{O}}} \]

The partial pressure of the gas in vapour phase (P) is proportional to the mole fraction of the gas (x) in the solution. It is expressed as P - KHx.
KH stands for-
The correct order of melting point is
The correct order of melting points of hydrides of group 16 elements is:
A rigid nitrogen tank stored inside a laboratory has a pressure of 30 atm at 06:00 am when the temperature is 27°C. At 03:00 pm, when the temperature is 45°C, the pressure in the tank will be _______ atm. [nearest integer]
At 345 K, the half life for the decomposition of a sample of a gaseous compound initially at 55.5 kPa was 340 s. When the pressure was 27.8 kPa, the half life was found to be 170 s. The order of the reaction is ________. [integer answer]
A cycle tube will burst if the volume of air inside exceeds 1L at the room temperature. If at I bar pressure the air occupies 500 mL, then up to what pressure can the tube be expanded at the same temperature?
Which of the following mixtures of gases does not obey Dalton's law of partial pressure?
Moles of \(N_2 = 0.4\) and moles of \(O_2 = 0.1\), find \(P_{N_2}\) (Partial pressure) \(N_2\) =? at atmospheric pressure.
If 10 L of an ideal gas at a pressure of 5 atm expands isothermally and reversibly to a final volume of 100 L. the work done and heat absorbed in this process (in Lit-atm), respectively are
The pressure of $H_2$ required to make the potential of $H_2$-electrode zero in pure water at 298 K is
The partial pressure of oxygen in the alveoli of the lungs is -
The mole fraction of dioxygen in a neon-dioxygen mixture is $0.18$. If the total pressure of the mixture is $25$ bar, the partial pressure of neon in the mixture would be
The pressure on a square plate is measured by measuring the force on the plate. If the maximum error in the measurement of force and length are respectively $4\%$ and $2\%$, then the maximum error in the measurement of pressure is
For the reaction, $ C(s)+CO_{2}(g)2CO(g) $ the partial pressure of $ CO_{2} $ and $ CO $ are $2.0$ and $4.0$ arm respectively then equilibrium $ K_{p} $ for the reaction will be
The relative humidity on a day when partial pressure of water vapour is $0.012 \times 10^{5} Pa$ at $12^{\circ} C$ is (Take vapour pressure of water at this temperature as $0.016 \times 10^{5}Pa)$
Which gas has the highest partial pressure in atmosphere?
The pressure of atmosphere air is $ 720\text{ }mm $ . The pressure of water vapour in the air is:
A gas has a volume of 15 ml at 300 K and 740 mm of Hg. Find the temperature if volume becomes 10 ml at 760 mm pressure of Hg.
The pressure of a mixture of equal weight of two gases of mol wt. 4 and 40, is 1 atm. The partial pressure of the lighter gas in this mixture is
The partial pressure of nitrogen in air is $0.76\, atm$. and its Henry?s law constant is $7.6 \times 10^4$ atm at 300 K. What is the mole fraction of $N_2$ in the solution obtained when air is bubbled through water at 300 K?
The partial pressure of oxygen in the alveolar air is: