Which gas has the highest partial pressure in atmosphere?
- $ CO_2$
- $H_2 O $
- $O_2 $
- $ N_2$
The Correct Option is D
Solution and Explanation
Top Questions on Partial pressure
The correct order of boiling points of hydrogen halides is:
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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?
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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:
\[ K_p = \frac{P_{\text{HOCl}}^2}{P_{\text{H}_2\text{O}} \cdot P_{\text{Cl}_2\text{O}}} \]
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- 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-- CUET (UG) - 2023
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In the given cycle ABCDA, the heat required for an ideal monoatomic gas will be:
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A conducting wire is stretched by applying a deforming force, so that its diameter decreases to 40% of the original value. The percentage change in its resistance will be:
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Concepts Used:
Partial Pressure
Partial Pressure is defined as if a container filled with more than one gas, each gas exerts pressure. The pressure of anyone gas within the container is called its partial pressure.
Dalton’s Law of Partial Pressure:
According to Dalton’s law of partial pressures, the total pressure exerted by the mixture of gases is the sum of the partial pressure of every existing individual gas, and every gas is assumed to be an Ideal gas.
Ptotal = P1 + P2 + P3 …
Where P1, P2, P3 are the partial pressures of gas 1, gas 2, and gas 3. Since every gas has an independent behavior, the ideal gas law is used to find the pressure of that gas if its number of moles, the volume of container and temperature is known.